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Chemistry paper 6 igcse tips to lose weight – CIE IGCSE Chemistry Coursebook - Second Edition

We recommend you to use the exam technique shown in the video clips. Please keep calm and attempt the paper with positive attitude and open mindness.

William Thompson
Tuesday, October 13, 2020
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  • It is easy to tell the difference between a solid, a liquid and a gas: A solid has a fixed shape and a fixed volume.

  • Endothermic Reaction: chemical reactions that have to take in energy in order to work and are not impulsive.

  • Catalysts Adding a catalyst increases the rate of reaction, but it itself is not used up in the reaction. They collide with each other.

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This is sometimes written as:. It shows how the temperature rises over time, when the substance is heated until it melts, then boils. Join Now Already a member?

  • The constituent particles are held close together by inter-particle attractive forces, the particles have little freedom of movement and they can only vibrate around a fixed position Liquids. Some metals are sonorous and this leads to special uses for them.

  • Read very carefully the instructions on the answer sheet. Write your name and index number on the answer sheet in the spaces provided.

  • The substance bringing about the reduction of the chlorine is the sodium, thus the sodium is called a reducing agent.

  • Higher pressures favour the side with less moles of gas c. Ionic bonding: A type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

  • It will help you to plan your revision programme for the theory examinations and will explain what the examiners are looking for in the answers you write. If the substances are not pure they can harm you.

Table 1 shows the results. That is why they are not found in nature. Where found The dust and smoke are clusters of particles.

Lose weight you start the reaction, the reactants slowly get used up. The graph shows how the population of mink might change over a few years if there were no human interference. When a gas is produced during a reaction, we can easily measure the reaction by measuring the Volume of the gas produced. Steel: An alloy between metallic iron and non-metallic carbon. Therefore, the process of where reactants become the products is the reaction process. Not everything dissolves so easily Now think about chalk. Diamond is made of carbon atoms, held in a strong lattice: strong covalent bonds C C C the centre atom forms four bonds C C tetrahedral in shape A carbon atom forms covalent bonds to four others, as shown above.

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There are forty questions on this paper. Online and Offline Tuition, which is better and Read the instructions on the Answer Sheet very carefully.

Endothermic Reaction: chemical reactions that have to take in energy in order to work and are not weiggt. This piece of writing is really a fastidious one it helps new the web visitors, who are wishing in favor of blogging. A copy of the Data Sheet is printed on page Save my name, email, and website in this browser for the next time I comment. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet. Do not use staples, paper clips, highlighters, glue or correction fluid.

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This document consists of 15 printed pages and 1 blank page. Section 2: What will be tested? Mark awarded: C1 Coursework checklist Following instructions Needed for Student Teacher Comments Follows written, diagrammatic or oral instructions to perform a single chemisgry operation —measures water vol 2 Use familiar apparatus and materials adequately and safely — safety glasses 4 Follows written, diagrammatic or oral instructions to perform an experiment involving a series of step by step practical operations — flame at same distance from can 4 Use familiar apparatus, materials and techniques adequately and safely — weighs fuel before and after burning. Messages 80 Reaction score 2 Points Home What's new Latest activity Authors. You may also like. A B C D 2 ethanol methane salt sugar An experiment is carried out to separate a mixture of two dyes.

Sign Up Sign In. You may also like. See how much you can improve! Please keep calm and attempt the paper with positive attitude and open mindness. First Law of Thermodynamics: basically means matter or energy can not be created or destroyed.

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At this point, crystals of the solid will grow in the solution. Some have more neutrons than others. They were found to be of very different heights.

Messages 80 Reaction score 2 Points Provide valid conclusions and suggestions for improvements. English proficiency tests-which one to take? A mark will not be deducted for a wrong answer.

Section 2: What will be tested? Online courses for school students in lockdown. A mark will not be deducted for a wrong answer. Read the instructions on the Answer Sheet very carefully.

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Search titles only. Digitization of education: facts and figures July 28, Read on to know more below. Search Advanced search….

Which of the three basic colours is the most soluble in propanone? Filtration a method of separation used to remove undissolved solids from liquids. Some metals are sonorous and this leads to special uses for them. In fact they exist as giant covalent structures, or macromolecules. This is not a solution.

But the key ideas are always the same. By accident, he left some in a drawer, wrapped in thick paper, on top of a photographic plate. Q 1 One element has atoms with 13 electrons. Formed as a product as respiration.

Messages 5 Reaction score 0 Points 0. Experimental techniques 2. What's new New posts New profile posts Latest activity. Answer the following

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Bases which ionize only partially when dissolved in water are called weak bases. Anion: An ion with more electrons than protons, giving it a net negative charge. Strong forces hold them together. Ethanoi acid is prepared in industry by passing ethanol and air over a heated catalyst.

The nucleus is itself a cluster of two kinds of particles, protons and neutrons. First the ice melts to water. However, a small mammal called the Hedgehog Erinaceus europaeus was released onto the island. They are stronger and less reactive.

Natural Gas: This is composed lose of methane and is often found with petroleum. As the reaction occurs and the reactants get slowly used up, the concentration of the substance then decreases. The number of protons in an atom is called its proton number. For example: iodine, I2 chlorine, Cl2 oxygen, O2 sulfur, S8 nitrogen, N2 phosphorus, P4 Elements made up of molecules containing two atoms are called diatomic. Suppose it was warmed a little in an oven, before the experiment. On further cooling, the liquid turns to a solid. There is a difference in structure between thermoplastic and thermosetting polymers.

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Nitrogen monoxide further reacts with the oxygen in the air to form Nitrogen Oxide. Atoms of sodium and chlorine have bonded joined together to form a compound. Just like snooker balls! The air is cooled until it is liquid, then warmed up. This water freezes around

  • Purifying chemicals and substances is important, especially if we ingest it. This makes the solid expand.

  • This section describes the areas of knowledge, understanding and skills that you will be tested on.

  • The third shell can hold 18 electrons.

Messages Reaction score 11 Points JavaScript is disabled. Career options after class 10th. Career options after class 10th July 31, Search titles only. The Substances in the Paper go up depending on their Mass. Yes, Cool!

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How to score in the exam? July igxse, Interpret and evaluate experimental results. We can say that a Solution has the same substance as another solution because they form a line of the same height. Search titles only. For each question there are four possible answers A, B, C and D. First Law of Thermodynamics: basically means matter or energy can not be created or destroyed.

This can also cause acid rain Additionally, Nitrogen oxygen can cause certain respiratory problems. This force of attraction is called a covalent bond. Lesser the pH value, the more acidic is the solution i. There is a simple test to distinguish between ethane and ethene.

The number of electrons increases by 1 each time. Is this content inappropriate? Ato m s co m b i paperr i n g Some metals form more than one type of ion copper II oxide Look back at the Periodic Table on page If you cool it now, crystals will start to form. In the covalent compounds you have met so far, they are molecules. But they do dissolve in some solvents, for example tetrachloromethane. The carbon dioxide comes from the fact that carbon is already present in the cars engine.

But diamond and silica are different. Cl each [] 4 Explain why: a a magnesium ion has a charge of 21 b the ions in magnesium oxide stay together c magnesium chloride has no overall charge d the formula of magnesium chloride is MgCl2. Why are they more useful than pure metals?

  • Any colour changes were recorded.

  • Igcse Chemistry Notes Essay

  • But they have one big thing in common: they are all made of very tiny pieces, far too small to see.

  • I have Chemistry Paper 6 on Wednesday and have no time to revise all the topics, so is it necessary to do organic chem? Experimental techniques 2.

Alkanes: The names of chemicals in this group ends with -ane. A chemical change is taking place. Lose weight white solid is sodium chloride. They also developed chemmistry of the techniques we use in the lab today, such as distillation and crystallisation. Ethene Belongs to a family of alkenes Is an unsaturated hydrocarbon with a formula C2H4 Is a gas at room temperature Molecules contain a carbon-carbon double bond. It is the same with all metals. O a molecule of carbon dioxide H H It shares two with two hydrogen atoms.

Learners gain an understanding of the basic principles of Chemistry through a mix of theoretical and practical studies. Analyse data, identify papef, formulate hypotheses to investigate problems. How to use our Complete Model Answers? Our Complete Model Answers will help you to present and communicate your answers more effectively in the exam to score higher marks. Provide valid conclusions and suggestions for improvements. You may use a calculator.

Learners gain an understanding of the basic principles of Chemistry through a mix of theoretical and practical studies. Leave a Comment Chekistry Reply Save my name, email, and website in this browser for the next time I comment. Messages Reaction score 3 Points 0. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. Plan experiment, record and explain observations clearly.

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If this liquid is further cooled, the energy of the particles is decreased to weigh an extent that it is fully overcome by the attractive forces and the liquid freezes to become a solid. This shows how a blood sample could be analysed, for traces of illegal drugs, or a poison, using gas chromatography: 2 A sample of blood is injected into injector the carrier gas. If they collide, with enough energy then they will react. Rusting: Iron III oxide.

This technique is shown in Fig. Over the millions of years, high pressure and heat eventually converted the vegetation into coal. At the end of the filtration, you are left the residue of the solid on the filter paper and the liquid in another container. Table 1 name of tissue xylem function transport of sugars absorption of water from the soil [3] [Total: 16] v1 4Y11 Cambridge IGCSE Biology — past paper questions and answers 61 Extension 2 a Define the term pollination.

This piece of writing is really a fastidious one it helps new the web visitors, who are wishing in favor of blogging. Second Law of Thermodynamics: Increased Entropy; the quality of matter and energy declines progressively over time. Do not use staples, paper clips, highlighters, glue or correction fluid. A line is drawn on a piece of chromatography paper and a spot of the dye mixture placed on it. All About Cambridge Checkpoint Examination. A copy of the Periodic Table is printed on page

But ions can also be formed from a group of bonded atoms. When magnesium burns in oxygen, each magnesium atom loses its 2 outer electrons to an oxygen atom. Period 5 tells you there are five shells. Draw a labeled diagram of the electrolysis of molten sodium chloride.

Read on to know more below. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. This section describes the areas of knowledge, understanding and skills that you will be tested on. You may also like. Experimental techniques 2. I have Chemistry Paper 6 on Wednesday and have no time to revise all the topics, so is it necessary to do organic chem? Answer the following

H H The molecule is shaped like a pyramid. Interpreting data We did the experiment in Step 2. The substances are just mixed together, and not chemically combined. Uses of sulphur Sulphur is used to produce sulphuric acid, a very important chemical. If the ink is a mixture of two or more dyes, then the different colours will move at different rates. Look for the block of transition elements.

I have Chemistry Paper 6 on Wednesday and have no time to revise all the topics, so is it tlps to do organic chem? Search titles only. Messages 80 Reaction score 2 Points We have helped student to score straight A-stars in all her subjects and received a Top in the World award. What's new New posts New profile posts Latest activity.

The strip of paper is then dipped in the solvent water. The fips has no overall charge. Below are two more examples. It is used to produce sulphur dioxide, which is used as a bleach in the manufacture of wood pulp for paper and also as a preservative because of its antibacterial properties.

You can show it in a short way by a single line, like this: Cl2Cl. Fistula has 18 stomata while B. Container B What do you think will happen to its pressure? The strong forces of attraction are called metallic bonds.

Search Advanced search…. Career options after class 10th July 31, Available Now! A copy of the Periodic Table is printed on page The Substances in the Paper go up depending on their Mass.

No new chemical substances are formed in these changes. So scientists can tell the age of ancient remains by measuring the radioactivity from them. Look at the examples that follow. Diamond has these properties: 1 I t is very hard, because each atom is held in place by four strong covalent bonds. The compounds are called covalent compounds.

Organic doesn't come in paper 6 brother, Only one part which is fermentation. Following your articles. Read the instructions on the Answer Sheet very carefully. This document consists of 15 printed pages and 1 blank page. IGCSE is a tough nut to crack. Each correct answer will score one mark.

Are they correct? Below are two more examples. So when a sodium atom and a chlorine atom react together, the sodium atom loses its electron to the chlorine atom, and two ions are formed. For each level, state two examples from Fig. If the energy given to activate is more than the energy released during the bond formation, the reaction is endothermic. Liquid The particles in a liquid can move about and slide past each other.

A solution of a strong base will have a high concentration of hydroxide ions, OH. They dissolve in moisture in the lining of your nose. To his surprise, he found an image of the crystals on the plate. Ethanoic acid, which is the main constituent of vinegar, is also the most well-known carboxylic acid. Therefore, the process of where reactants become the products is the reaction process.

When a reaction releases heat to the surroundings, we call that reaction an Exothermic Reaction. Therefore a carbon contains 6 protons ie. Ethanol is used as a solvent, and as car fuel. For example the symbol for carbon is C.

JavaScript is disabled. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. Sample Page of our Model Answers. Essay about Igcse Chemistry Notes Read very carefully the instructions on the answer sheet. Section 2: What will be tested? Please keep calm and attempt the paper with positive attitude and open mindness.

For a better experience, please enable JavaScript in your ihcse before proceeding. Done in Petri dish. The preparation has to be very strong and reliable. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. Home Essays Chemistry Paper 6 Igcse Filtration: A way of separating Insoluble Solids from Liquids. You must log in or register to reply here.

Flag for inappropriate content. So atoms have no overall charge. The electron shells for the first 20 elements Below are the electron shells for the first 20 elements of the Periodic Table. Work out concentration 0. That is because the free electrons take in heat energy, which makes them move faster. So the fourth electron is free to move through the graphite, carrying charge.

There are forty questions on this paper. Sign Up. Read on to know more below. Write your name and index number on the answer sheet in the spaces provided. Home What's new Latest activity Authors.

  • An estimate of the rate of reaction can be found from the time for a measurable change to take place.

  • Online courses for school students in lockdown. I have attached the different kinds of apparatus!

  • So it is not pure — and could make you ill.

  • The angle between the hydrogen atoms in water is By breaking the solid into smaller pieces, the surface area is increased, giving a greater area for collisions to take place and hence causing an increase in the rate of reaction.

  • It will help you to plan your revision programme for the theory examinations and will explain what the examiners are looking for in the answers you write. What topics are most important?

  • There are forty questions on this paper. Analyse data, identify trends, formulate hypotheses to investigate problems.

Purifying chemicals and substances is important, especially if we ingest it. Making use of these giant structures Different properties lead to different uses, as this table shows. Muscle A Acid rain, caused by sulphur dioxide escaping into the atmosphere, can make lakes and rivers acidic. This shows the resulting chromatogram: A seawater beaker heat a i What is the maximum temperature recorded on the thermometer, during the distillation?

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The more soluble a substance is in the solvent, the further it will travel up the chromatography paper. Nitrogen A nitrogen atom has five outer electrons, so needs a share in three more. Acid rain, caused by sulphur dioxide escaping into the atmosphere, can make lakes and rivers acidic. It is a series of chemical compounds having the same functional group but differing in composition by a fixed group of atoms. Speed at which products are formed. White ppt. If you are making a new medical drug, or a flavouring for food, you must make sure it contains nothing that could harm people.

The angle between the hydrogen atoms in water is Melt: A solid changes to a liquid at the boiling point. So they are called delocalised. To obtain a stable outer shell of 8 electrons, it loses this electron to another atom. These differences lead to very different properties, as you will see next.

If the substances are not pure they can harm you. You may use a calculator. Answer all questions.

Part 5. The preparation has to be very strong and reliable. You need to be able to: Demonstrate knowledge of scientific definitions, facts, phenomena, instruments, apparatus. How to use our Complete Model Answers? Messages 12 Reaction score 1 Points 0.

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Electrolysis is the splitting up of an electrolyte when molten or in solution. Uses of addition polymers Addition polymers such as itps ethene and poly vinyl chloride have many uses. Or in other words, the reducing agent is being oxidized undergoing oxidation. Use the term mass! Conversely, the larger molecules sink to the bottom and condense at higher temperatures Importance of Purification Purifying and separation methods allow us to obtain specific substances and chemicals needed for our everyday life.

Answer all questions. You must log in or register to reply here. Igcse Chemistry Notes Essay Pure substances have a Boiling and Melting point that is fixed.

  • Made by mixing cement with sand and small stones Mixing limestone, sand silicon dioxide and sodium carbonate together and melting the mixture. Test-tubes A — E on the right below contain five colourless solutions of amino acids, dissolved in water.

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  • Diamond is made of carbon atoms — different from sodium atoms.

  • Draw diagrams to explain. First, particles leave the crystal — it dissolves.

  • The preparation has to be very strong and reliable. This section describes the areas of knowledge, understanding and skills that you will be tested on.

Second Law of Thermodynamics: Increased Entropy; the quality of matter and energy declines progressively over time. Write your name and index number on the answer sheet in the spaces provided. Sign In. One cannot take any chance when preparing for such important examination.

Chemistey of sodium and chlorine have bonded joined together to form a compound. Catalase is a protein. High temperatures and pressure causes the compounds to break down into gas. What do you notice about the number of neutrons? These gases are found as single atoms as they do not like to interact with other atoms on the periodic table.

Filtration: A way of separating Insoluble Solids from Liquids. JavaScript is disabled. For each question there are four possible answers A, B, C and D.

Available Now! With Filter Paper and a Funnel. You must log in or register to reply here. Please keep calm and attempt the paper with positive attitude and open mindness. Online courses for school students in lockdown July 29,

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What's new New posts Chemishry profile posts Latest activity. Essay about Igcse Chemistry Notes Learners gain an understanding of the basic principles of Chemistry through a mix of theoretical and practical studies. You may also like. Messages 2 Reaction score 0 Points 0. You may use a calculator. Forums New posts Search forums.

You are required wegiht write very concise answers for Paper 4 and Paper 6 in the limited writing space provided and the limited time duration in the exam. Provide valid conclusions and suggestions for improvements. Sample Page of our Model Answers. Messages 15 Reaction score 0 Points 0. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. Online courses for school students in lockdown July 29, Chemistry Igcse Essay

This is sweeter gicse can be used in smaller quantities in slimming products. What does that mean, and why does it occur? This mixing process is called diffusion. Separates a liquid mixture into its individual components. Many of these contain atoms of other non-metals too, such as nitrogen, phosphorus, and iodine.

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