P6 Chemistry Interesting Q/A

Note – This has been submitted by someone from o-levels, but most of it still applies to IGCSE PAPER CHROMATOGRAPHY (ASCENDING) Qn) Why is paper chromatography carried out in an enclosed environment?  Ans) It serves to prevent the loss of the solvent from the tube by evaporation.  Qn) Why is the starting line drawn with …

IGCSE Chemistry 0620 Essential Definitions

A Acetylene: a gas (formula C2H2) used as a fuel, for example in the oxy-acetylene torch Acid rain: rain that is acidic because gases such as sulfur dioxide are dissolved in it (from burning fossil fuels) Acidic solution: has a pH less than 7; an acidic solution contains H+ ions Acid fermentation: the process in …

Welcome to prepIGCSE

Warm Greetings to all, We are immensely overwhelmed to have you on board with us. We hope that through this forum everyone achieves their desired results. Please feel free to ask any questions you have on any topic, by simply dropping us a mail on prepigcse@gmail.com , and we will try to answer it to …

IGCSE Chemistry Basics/Matter

Chemistry notes  Chapter 1 : The Particulate Nature Of Matter  Matter is divided into 3 states. They are sold, liquid and gas. Matter is all the substances and materials from which the physical universe is composed.  Solids have a definite shape and volume. This may change  if affected by temperature. Solids usually expand upon heating …

IGCSE Chemistry Organic Chemistry

Organic Chemistry 1  Compounds that contain carbon are called organic compounds.  Organic chemistry is a branch of chemistry that deals with Hydrocarbons. Hydro carbons are compounds the contain Carbon and Hydrogen only.  There are three types of Hydrocarbons. They are  Alkanes  Alkenes  Alkynes (not part of syllabus) Alkanes  The molecules within this family  contain carbon …

IGCSE Chemistry Paper 6 Notes

CHEMISTRY IGCSE REVISION by Aditi Prasad How to add salt to an acid in a basic Acid+Insoluble Base reaction? Spatula Why is heat not required sometimes in a  Acid+Insoluble Base reaction? Reaction is fast enough at room temperature Define ‘in excess’ unreacted still solid insoluble How to form crystals from an aquoues solution of a …

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