Atmosphere—layers of air surrounding the Earth
Atom—smallest particle into which an element can be divided and still have the properties of that
element
Compound—matter made up of two or more elements
Comprise—contain something
Element—substance that is made up of only one kind of matter
Ocean—a large body of salt water
Organisms—living things
Atom—the smallest particle into which an element can be divided and still have the properties of that
element
Atomic mass—average mass of one atom of an element
Atomic number—number of protons in the nucleus of one atom of an element; location on the
periodic table
Chemical formula—abbreviation that tells the elements and number of atoms in a molecule
Chemical symbol—one- or two-letter code that stands for an element
Compound—matter made of two or more elements
Element—substance that is the building blocks of all matter; an element is made up of one kind of
atom
Molecule—smallest particle of a substance that still has the properties of that substance
Periodic table of the Elements—a chart where all the elements are organized into periods and
groups according to their properties
Pure substance—a substance made up of only one kind of element
Atom—the smallest particle into which an element can be divided and still have the properties of that
element
Chemical formula—abbreviation that tells the elements and number of atoms in a molecule
Chemical symbol—one- or two-letter code that stands for an element
Compound—matter made of two or more elements
Element—substance that is the building blocks of all matter; an element is made up of one kind of
atom
Molecule—smallest particle of a substance that still has the properties of that substance
Periodic table of the Elements—a chart where all the elements are organized into periods and
groups according to their properties
Pure substance—a substance made up of only one kind of element