What Is Matter Made of? (Part 3)

a substance that cannot be broken down any further by a physical or chemical process

a substance that can only be broken down by a physical process

any substance found on Earth

a substance that can only be broken down by a chemical process

the smallest unit of an element that maintains the properties of that element

the smallest unit of matter that has been discovered by scientists

a type of element that is very rare

the largest unit of an element that maintains the properties of that element

a force that pushes two atoms apart

a type of attraction between two atoms

a similarity shared by two atoms

a group of atoms that have similar properties

a type of atom that has properties of several different elements

a mixture of at least three elements

a group of two or more atoms held together by gravity

a group of two or more atoms held together by chemical bonds

a substance made of two or more of the same molecules that are physically combined

a substance made of two or more different elements that are chemically combined

a substance made of two or more of the same molecules that are chemically combined

a substance made of two or more different elements that are physically combined

a formula which shows the elements and the ratio of atoms in a molecule or compound

a formula which shows the different substances in a mixture

a formula used to calculate the amount of energy used when atoms bond to each other to create a molecule or compound

a formula used to calculate the amount of energy used when a substance undergoes a chemical reaction

a substance made up of all 118 elements on the periodic table

a substance in which the different parts are evenly mixed throughout

a substance that has a composition and properties that are always changing

a substance that has a definite composition and clearly defined physical and chemical properties

a substance which cannot be separated back into its original parts

a substance that forms when molecules chemically bond together

a substance that forms when the subatomic particles of an atom rearrange

a substance made of two or more elements that are not chemically combined