1.
The amount of matter in an atom of an element.
2.
The number of protons contained in an atom.
3.
When one or more substances known as reactants are converted to products.
4.
A type of element with the same number of protons but a changed number of neutrons from the original
5.
A metal bonding with a nonmetal.
6.
A nonmetal bonding with a nonmetal.
7.
Something with properties of both a metal and a nonmetal.
8.
Something made of only one type of atom. These make up the periodic table.
9.
A subatomic particle with a neutral charge.
10.
A subatomic particle with a positive charge.
11.
A subatomic particle with a negative charge.
12.
Something that can dissolve other things.
13.
Something that can be dissolved.
14.
The smallest part of a substance that cannot be broken down anymore.
15.
A row on the periodic table.
16.
A column on the periodic table. This determines the number of valence electrons in an element.
17.
The measure of how a substance reacts with other substances.
18.
The electrons in the outermost energy level of an atom.
19.
Elements that are good conductors and malleable.
20.
Elements that are bad conductors and dull colored.
