CHAPTER 2 TEST BANK AND ANSWER KEY

TRUE/FALSE - Write 'T' if the statement is true and 'F' if the statement is false. 1) Chemistry is the branch of science that deals with the composition of matter.

• true

• false

Matter is anything that has weight and takes up space.

• true

• false

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

• true

• false

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

• true

• false

A covalent bond is formed when two atoms share electrons.

• true

• false

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

• true

• false

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

• true

• false

Water is an example of a compound.

• true

• false

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

• true

• false

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

• true

• false