CHAPTER 2 TEST BANK AND ANSWER KEY

Front

TRUE/FALSE - Write 'T' if the statement is true and 'F' if the statement is false. Chemistry is the branch of science that deals with the composition of matter.

Back

true

Front

Matter is anything that has weight and takes up space. True or False?

Back

True

Front

The mass number of an atom is equivalent to the number of neutrons in its nucleus.

Back

false

Front

Sodium and chloride ions readily combine because they have opposite charges.

Back

true

Front

A covalent bond is formed when two atoms share electrons.

Back

true

Front

The molecular formula for compounds like sodium chloride (NaCl) indicate the relative amounts of each element present.

Back

true

Front

When two pairs of electrons are shared, the resulting bond is called a double covalent bond.

Back

true

Front

Water is an example of a compound.

Back

true

Front

A molecular formula represents the numbers and types of atoms in a molecule.

Back

true

Front

During an exchange reaction, the bonds of a reactant molecule break so that simpler molecules, atoms, or ions are formed.

Back

true