Chemical reaction, combustion and global warming

1. Conservation of mass during chemical changes

1.1. sultur+iron->iron sulfide

1.2. 32g+36g->88g

2. Combustion

2.1. The substance that burns is called the fuel.

2.2. COmbustion needs thermal energy (heat) to get it started.

2.3. Combustion is a chemical reaction which thermal energy and light energy are produced.

2.4. During combustion, oxygen in the air combines with another element to form an oxide. This is a type of oxidation reaction.

2.4.1. carbon+oxygen->carbon dioxide+light+thermal energy

2.4.2. magnesium+oxygen->magnesium oxide (powder)+bright sparkling light+thermal energy

2.4.3. magnesium+oxygen->magnesium oxide (powder)+bright sparkling light+thermal energy