Counting Atoms

Front

How many atoms of hydrogen are in the compound H2O?

Back

There are 2 atoms of hydrogen in H2O.

Front

What is the term for the number in front of a chemical equation that multiplies the number of atoms?

Back

Coefficient.

Front

What do you call two or more atoms held together by covalent bonds?

Back

Molecule.

Front

What is found on the left side of a chemical equation?

Back

Reactants.

Front

How many atoms of carbon are in the compound C3H8?

Back

There are 3 atoms of carbon in C3H8.

Front

What is the term for a substance made of two or more different elements that are chemically bonded?

Back

Compound.

Front

What is the difference between a molecule and a compound?

Back

A molecule is two or more atoms bonded together, while a compound is a type of molecule that contains at least two different elements.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.

Front

What does the law of conservation of mass state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.