Chemistry Review first semester

Front

True or false: When naming ionic compounds, use prefixes to indicate subscripts.

Back

False

Front

What information does a subscript number tell us?

Back

The number of atoms per element.

Front

The chemical formula for an ionic compound of aluminum and chlorine is:

Back

AlCl₃.

Front

How many molecules are in the Reactant?

Back

3

Front

What is the law of conservation of matter?

Back

The mass of the reactants is the same as the mass of the products.

Front

What is an ionic compound?

Back

A compound formed from the electrostatic attraction between oppositely charged ions.

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element in a molecule.

Front

What is the difference between an element and a compound?

Back

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

Front

What does the term 'reactants' refer to in a chemical reaction?

Back

The substances that undergo a chemical change during a reaction.

Front

What does the term 'products' refer to in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.