Igcse chem - Study guides, Class notes & Summaries

Popular Exam Questions & Answers IGCSE Chemistry 2023 correct

IGCSE SINGLE SCIENCE CHEMISTRY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Describe how a solid undergoes melting Correct Answer: The energy from the heat source will make the solid particles vibrate faster and faster to a point that their forces of attraction loss their strength and the particles are able to move around. Melting point Correct Answer: The temperature at which a solid becomes a liquid Describe what happens when a liquid undergoes freezing Cor...

2,4,3,1 - ANS-Valencies Oxygen : _____ Carbon : ____ Nitrogen : _____ Hydrogen : _____

IGCSE Chemistry 0620 / 0971 1- States of matter Summary Notes

IGCSE CHEMISTRY/ORGANIC CHEMISTRY NEWEST EXAM 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS|ALREADY GRADED A+

Chemistry ATP analysis How to check if a liquid is water? Check boiling point = 100 or melting point = 0 Why it is important to immediately put a bung in the conical flask in an experiment where gas is produced? minimize gas loss/ escape before bung is replaced State the advantage of measuring the volume of gas collected every 10 seconds rather than every 20 seconds more points / data so better / smoother graph / curve / line Why condensers are used? To cool the vapour. ...

What is Homologous series - ANS-a 'family' of similar compounds with similar chemical properties due to the presence of the same functional group

Experiment for Diffusion? - Correct Answer 1) HCl placed at one end of the test tube, ammonia solution at the other. 2) Where they meet, a ring of Ammonium Chloride appears. 3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. Experiment for Dilution? - Correct Answer 1) Put a coloured substance in a solvent e.g food colouring in water. 2) Over the time, the colour levels out but is weaker than the origi...

What is an electric current? - correct answer A flow of electrons or ions What is an electron? - correct answer A minute particle that possesses an electrical charge of minus one (-1) What is an ion? - correct answer An atom or group of atoms that carries a charge due to the loss or gain of one or more electrons What is a conductor of electricity? - correct answer A substance that allows electricity to flow through it What is an insulator? - correct answer A substance that does not a...