Pre-Test (Atoms)

negatively charged particles which are found outside the nucleus of the atom.

the total number of protons and neutrons in an atom's nucleus.

he created the first accepted version of the periodic table.

the number of protons in the nucleus of an atom.

properties of metal that has the ability to be stretched into thin wires.

each horizontal row of elements is called a.

they are the most reactive metals and they react violently with water.

atoms in this family have 3 valence electrons. This family includes the most abundant metal in the earth's crust.

most abundant element in the earth's crust.

colorful gases that are extremely unreactive.