Unit 2 Review: Chemistry of Life

What is the basic unit of matter?

• atom

• cell

• electron

• element

What is the term for an atom with a positive or negative charge?

• isotope

• proton

• electron

• ion

In what type of chemical bond do atoms share electrons?

• ionic bond

• covalent bond

• hydrogen bond

• peptide bond

What subatomic particle has a negative charge?

• proton

• neutron

• electron

• ion

What do you call a substance consisting of only one type of atom?

• element

• isotope

• ion

• compound

Atoms of the same element but containing a different number of neutrons are called

• isotopes

• electrons

• molecules

• compounds

What subatomic particle has no charge?

• proton

• electron

• neutron

• nucleus

A substance containing two or more different atoms in a definite proportion is called a/an

• element

• molecule

• compound

• isotope

A type of bond between oppositely charged ions is called a/an

• ionic bond

• peptide bond

• covalent bond

• opposite bond

What substance is an example of a molecule, but not a compound

• ozone O3

• water H2O

• glucose C6H12O6

• table salt NaCl