1.
an individual particle of an element
2.
the mass of a single atom; all atoms of an element have approximately the same atomic mass.
3.
a shorthand notation of one, two, or three letters that represent the name of the element
4.
a unique particle of matter that is a fundamental building block of matter
5.
a table that lists all of the known elements and groups them into columns by important shared properties
6.
the types of elements that make up a substance, as well as the specific ratios of atoms of each kind of element that make it up
7.
the connection between atoms in more complex particles
8.
the specific way in which the bonds and atoms are arranged within the molecules of a substance
9.
a solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern
10.
a structure whose subunits occur in a constant ratio and are arranged in a repeating pattern; the subunit can be individual atoms or a molecule
11.
a representation of an object which makes important aspects easier to see
12.
a group of two or more atoms that are held together by chemical bonds; a molecule has a unique composition and structure
13.
a type of extended structure that is made of many smaller, repeating subunits in a chain; the repeating subunit is a unique molecule
14.
a property that describes the mass of a certain volume of matter
15.
on a scale that people can see with their eyes
16.
the amount of matter in an object or sample; mass is measured in kilograms
17.
a characteristic of matter
18.
a property that describes how well one substance dissolves in another substance
19.
matter that has a constant chemical composition and characteristics
