Matter & Its Interactions PS.8.1

Front

What is the smallest particle of matter?

Back

An atom.

Front

What does the law of conservation of mass state?

Back

The mass of the reactants equals the mass of the products in a chemical reaction.

Front

Give an example of the law of conservation of mass in a chemical reaction.

Back

The reaction of hydrogen and oxygen to form water.

Front

What is a balanced chemical reaction?

Back

A chemical reaction where the number of atoms of each element is the same on both sides of the equation.

Front

Which element is a liquid at room temperature?

Back

Mercury (Hg).

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean for a chemical equation to be balanced?

Back

It means that the number of atoms for each element is the same on both sides of the equation.