Today's Rocket Words: Your 5 words and meanings to learn

reactants

Substances that react to produce products in a chemical reaction

conservation of mass

The idea that in any chemical reaction or state change, the total mass of the reactants before the reaction must equal the total mass of the products after the reaction

products

Substances which are formed as the result of a chemical reaction

propane

A flammable gas, present in natural gas and used as bottled fuel

closed system

A system in which matter cannot enter or leave; for example, a sealed container

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