chemical reaction

a principle stating that mass cannot be created or destroyed.

A chemical substance that is present at the start of a chemical reaction

From a laboratory process, a student collects 28.0 g of hydrogen and 224.0 g of oxygen. How much water was originally involved in the process?

gas produced, light produced, formation of percipitate, temp change, permanent colour change

If the mass of the products measured 120 g, what would be the mass of the reactants?

A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust

the substances that are formed by the chemical change

What is the mass of the reactants equal to?

a measure of how quickly a specific material is capable of catching fire and burning.

If 178.8 g of water is separated into hydrogen and oxygen gas, and the hydrogen gas has a mass of 20.0 g. What is the mass of the oxygen gas produced?

If 50 grams of sodium reacts with chlorine to form 126 grams of salt. How many grams of chlorine reacted?

In chemical reactions, atoms are

A 10 gram sample of iron reacts with oxygen to form 18.2 grams of ferric oxide. How many grams of oxygen reacted?