the basics
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the big ones
100

Elements found in group 1 of the Periodic Table

Alkali Metals

100

elements found in group 18 of the periodic table

noble gases

100

elements that do not resemble metals

non-metals

100

a solution of two or more metals

alloy

100

the center of an atom

nucleus

200

A group of atoms that share electrons.

Molecule

200

the attraction between atoms or ions

bond

200

one of seven horizontal rows in the periodic table of elements

period

200

a regular, patterned three-dimensional structure

lattice

200

a positively charged particle in an atom

proton

300

a chart that organizes all the elements into rows and columns

periodic table

300

elements with metallic and non metallic properties

metalloids

300

a formula that identifies which elements, and how many atoms or ions of each

chemical formula

300

elements found in group 17 of the periodic table of elements

halogens

300

atoms of the same element that have different atomic masses

isotope

400

a generalized explanation of a set of related observations or events supported by research and good arguments

theory

400

a generalized description stating that elements arranged in order of atomic numbers show a periodic repetition of properties

periodic law

400

an electric charge that an atom or group of joined atoms takes on when it loses or gains electrons

ion charge

400

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Miss Campbell

400

a negatively charged particle in an atom

electron

500

the total number of protons and neutrons in the nucleus of an atom

mass number

500

a neutral particle in an atom

neutron

500

the number of protons in an atom of an element

atomic number

500

a pure substance formed when non-metals combine chemically

molecular compound

500

a mass of an object in comparison to the mass of another object

relative mass

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