Atoms
This is the center of an atom
Nucleus
The atomic number of an element tells me the number of this in the nucleus
Protons
Nonmetals are found mostly on which side of the periodic table
Right side
The element with 47 protons
Silver
The only Noble Gas that does not have 8 valence electrons.
Helium (He)
These particles have a negative charge, no mass and located outside the nucleus.
electrons
The horizontal rows on the Periodic table.
periods
Material that can be hammered or rolled into thin sheets
Malleable
The Metalloid in period 4 with four valence electrons.
Germanium
Are found on the outermost energy level of an atom and determines how reactive an atom is.
valence electrons
These two particles (found in the nucleus) are what makes up an atom's mass
Protons and Neutrons
Number of groups in the periodic table
18
Name of the second most reactive group of metals
Alkaline Earth Metals (group 2)
The element with four energy levels and two valence electrons.
Calcium
The deterioration of a metal due to reactions with the environment.
Corrosion
The building blocks of all matter.
atoms
Na is the chemical symbol for this element
Sodium
Name for the most reactive group of metals on the Periodic Table.
Alkali Metals (Group 1)
The element with 50 protons
Tin (Sn)
Mg and Ca belong to this group in the periodic table
group 2
An atom with the same number of protons and different number of neutrons is called this
Isotope
When added together they make up the atomic mass of an element.
protons and neutrons
Name 4 nonmetals
He, H, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, Rn, UUo (18 total)
Identify a nonmetal with only one valence electron.
Hydrogen
The elements that touch the zig zag line on the Periodic Table.
metalloids