Search Results

K Dash Chemistry.com AI teacher system Unit 6 Questions Sample Question 1 2 3 4 5 6 7 8 Basic Question 1 2 3 4 5 6 7 8 Home Home Home Home Home Home Home Home Home Home Home Home Home Home

Explain the Changes of state in terms of the Kinetic Theory IGCSE CHEMISTRY CAMBRIDGE 1.Particulate Nature of Matter 1.2 Changes in States Of Matter Back to Chapter 1 Menu Notes : Freezing : From liquid to solid Melting : From solid to liquid Boiling : From liquid to gas Condensation : From gas to liquid Sublimation : From Solid to gas directly Explain the Changes of state in terms of the Kinetic Theory To Change Matter from one physical state to another a certain amount of energy has to be absorbed or released. The amount of energy needed depends on the strength of the attraction forces between the particles of the substance. The stronger the forces of attraction between the particles the larger the amount of energy required. Melting Changing from a solid to liquid state by heating . Heat is absorbed to break the bonds between the solid particles and change it into liquid ( heat is changed into kinetic energy which makes the particles vibrate faster so it can break the bonds between them and change into liquid state). Happens at the Melting point. Boiling Changing from a liquid to gas state by heating . Occurs below the surface of the liquid. Requires heat to be absorbed to break the bonds between the liquid particles and change it into gas ( heat is changed into kinetic energy which makes the particles move faster so it can break the bonds between them and change into gas state ). Happens at the Boiling point. Evaporation Changing from a liquid to gas state. occurs only at the surface of the liquid. Requires heat to be absorbed to break the bonds between the liquid particles and change it into gas ( heat is changed into kinetic energy which makes the particles move faster so it can break the bonds between them). Freezing Changing from a liquid to solid state by decreasing temperature . Requires heat to be released (lost from system) to make new bonds between the liquid particles and change it into solid ( losing heat decreases the kinetic energy of the particles which makes the particles move slower and stick together) Happens at the Freezing point. Note : Freezing point and Melting point has the same value it depends only in the direction of change in state From Solid to liquid (Melting point) From liquid to solid (Freezing point) Condensation Changing from a gas to liquid state. Requires heat to be released (lost from system) to make new bonds between the gas particles and change it into liquid ( losing heat decreases the kinetic energy of the particles which makes the particles move slower) Note that condensation is the opposite of evaporation Sublimation Changing from a solid to gas directly. It happens in certain types of substances , and is related to the nature of the substance not to the method of heating. example : Solid iodine , solid carbon dioxide , solid ammonium chloride. The reverse reaction also happens and is also called sometimes called deposition or de-sublimation. Sublimation occurs at a specific temperature which is unique for a pure substance. Describe qualitatively the pressure and the temperature of a gas in terms of motion of its particles As mentioned earlier the particles of gas moves rapidly and randomly in all directions this causes the particles of gas to collide with each other and with the walls of its container. this causes the particles to exert pressure. The Higher the temperature the more rapid the particles will hit each other and collide with the walls of the container exerting higher pressure. When the gas is compressed to a smaller volume , the particles also hit each other more frequently and hit the walls more frequently increasing the gas pressure. List of Topics Download as PDF

Cancellation policy We understand very well how precious is your time , that is why we try to be always punctual and on it. That is why we are expecting the same from you , Start Lesson on time and not be late so that you do not miss anything. Still we understand circumstances happens that is why sometimes you come late or you are not able to show up. You are allowed 1 time cancellation on same day with valid reasons , 2 times cancellations at least 24 hours before lesson with valid reasons. Lessons cancellation beyond these 3 times are not allowed and Session will be considered as done , Please note that not providing valid reasons also for cancellation will result in session considered given. FAQ

Questions Answers Past Papers Revision Sheets Homework Bookonline Tuition Chemistry Lessons worldwide for SABIS IGCSE GCSE O LEVEL A LEVEL AND ... 1. ATOMIC STRUCTURE 2. THE PERIODIC TABLE 3. IONIC BONDING 4. COVALENT BONDING 5. TYPES OF SUBSTANCES 6. CALCULATIONS INVOL EDEXCEL GCSE -Syllabus Contents 1. ATOMIC STRUCTURE 2. THE PERIODIC TABLE 3. IONIC BONDING 4. COVALENT BONDING 5. TYPES OF SUBSTANCES 6. CALCULATIONS INVOLVING MASSES 7. STATES OF MATTER AND MIXTURES 8. METHODS OF SEPARATING & PURIFYING SUBSTANCES 9. ACIDS BASES AND SALTS 10. ELECTROLYTIC PROCESSES 11. OBTAINING AND USING METALS 12. REVERSIBLE REACTIONS & EQUILIBRIA 13. TRANSITION METALS, ALLOYS & CORROSION 14. QUANTITATIVE ANALYSIS 15. DYNAMIC EQUILIBRIA 16. CHEMICAL CELLS & FUEL CELLS 17. GROUP 1 (COMING SOON) 18. GROUP 7 (COMING SOON) 19. GROUP 0 (COMING SOON) 20. RATES OF REACTION (COMING SOON) 21. HEAT ENERGY CHANGES IN CHEMICAL REACTIONS 22. FUELS 23. EARTH & ATMOSPHERIC SCIENCE (COMING SOON) 24. QUALITATIVE ANALYSIS: TESTS FOR IONS (COMING SOON) 25. HYDROCARBONS (COMING SOON) 26. POLYMERS (COMING SOON) 27. ALCOHOLS & CARBOXYLIC ACIDS (COMING SOON) 28. NANO PARTICLES & BULK & SURFACE PROPERTIES OF MATTER (Coming soon)

Particulate Nature of Matter for IGCSE CIE Questions Part 3 Enjoy the questions below , click start to begin answering Questions show only in Desktop view not on mobile view See Also Questions Part 1 Questions Part 2 Questions Part 4

Expert SABIS Grade 12 Chemistry tuition in UAE and online . Weekly live sessions. Boost grades with a top private tutor. Register today at K-Chemistry.com

Unit 2 AP Chemistry