The Atom, Elements & Periodic Table

elements with the same number of protons but different numbers of neutrons are called

Metals in groups 3 - 12

elements in Group 18

the elements in Group 17

an element that lacks most of the properties of metals

the ability to transfer electric current

negatively charged particle in the atom

Group 1 Metals

good conductors of heat and electricity

the ability to hold heat

contains the positively charged particles of the atom

the specific amount of energy an electron has

there are 7 of these on the periodic table

the ability to change the shape of a metal

substances that can conduct electric current on demand

the ability to draw metals out into a wire

this particle has a charge of zero

the deterioration of a metal due to a chemical reaction in the environment

the number of protons in an atom is equal to its

the average mass of all the isotopes of an element

an arrangement of elements showing their repeating patterns

have some properties of metals and nonmetals

Group 2 Metals

there are 18 of these on the periodic table

this word comes from the Greek term meaning "uncuttable"

a substance made of of 2 atoms of the same element

contains one or two letters that represent the element on the periodic table

the sum of the protons and neutrons in an atom

the ability to combine with another substance

the positively charged particle in the nucleus