Honors Human Physiology Summer Homework Quiz (vocabulary)

UNFINISHED

bond

connection between two atoms in a molecule

catalyst

a substance that increased the rate of a chemical reaction

molecule

a particle composed of two or more bonded atoms

matter

anything that takes up space and has mass

atom

the smallest particle of an element, having the properties of an element

compound

a substance composed of two or more elements

element

a substance composed of elements that cannot be broken down into another substance

isotope

forms of atoms with the same amount of protons but different number neutrons