is a substance that adds oxygen to cause or contribute to the combustion of other material

substance that speeds up the rate of a chemical reaction

things that react together (Hydrogen and Oxygen)

When substances interact with each other. Original substances are used up.

Gas given off during a chemical reaction.

Sign of a chemical reaction.

A flammable gas that makes a 'pop' sound during a flame test.

things made when substances reacts

(Water)

When a substance changes its phase (changes to a solid, liquid , gas, or plasma) but remains the same substance.

mass is neither created or destroyed, which is why we balance chemical reactions

the process by which one or more substances change to produce one or more different substances

Solid formed from 2 liquids during a chemical reaction. Sign of a chemical reaction.

change in temperature, formation of bubbles, precipitate forms, color change, change in smell, difficult to reverse