KIỀM - KIỀM THỔ
by Thần Rùa

1. Chemical Reactions
1.1. Reactants
1.2. Products
1.3. Conservation of mass
1.4. Conservation of energy
1.4.1. Exothermic
1.4.2. Endothermic
2. States of Matter
2.1. Solid
2.2. Liquid
2.3. Gas
2.4. Plasma
3. Properties of Matter
3.1. Chemical
3.1.1. Chemical reaction occurs; changes into different substance; not reversible
3.2. Physical
3.2.1. Cutting, bending, dissolving, etc. May change shape but no chemical change; often reversible