Chemistry: atoms, molecules, elements, and compounds
A model of elements, atoms, compounds, and molecules
Paper clips, "Chemical formulas" and a law of nature
Paper clips, "Chemical formulas" and another law of nature
Chemical changes (reactions)
Models of acids and bases
Do acids and bases conduct electricity?
Evidence of another chemical reaction
An electric cell: electric energy from a chemical reaction
Oxidation: a burning candle
Energy from an exothermic chemical reaction
Rusting (corrosion): slow oxidation
An oxidation-reduction reaction
Indicates experiments that offer ideas for a science fair project
What fraction of air is oxygen?
Can a burning candle be used to measure the percent of oxygen in air?
A look at the inconsistency in experiment
A catalyst, oxygen, and burning
Separating and testing substances
Separating substances in a solution
Separating solid substances
A test to identify starch
A test to identify iodized salt
A test to identify a simple sugar
A test to identify hydrogen peroxide