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SCI-7 U3

Cumulative Vocab Test Words

Protons Particles in an atom that have a positive charge (+1), have a mass of 1 AMU, and are located in the nucleus.
Neutrons Particles in an atom that have no charge, have a mass of 1 AMU, and are located in the nucleus.
Electrons Particles in an atom that have a negative charge (-1), have a mass of ~1/2000 AMU, and are located traveling around the nucleus.
Periodic Table of Elements A diagram of the 118 elements arranged in order of increasing number of protons.
Groups The vertical columns on the Periodic Table containing elements with similar properties.
Periods The horizontal rows on the Periodic Table containing elements with the same number of electron orbits.
Families Multiple elements across multiple groups and and periods on the Periodic Table having similar properties.
Atomic Mass The total of the protons and neutrons in the nucleus of an atom of a certain element; the larger number with the decimal.
Atomic Number The number of protons in the nucleus of an atom of a certain element; the smaller number without a decimal.
Isotope An atom of an element that has the same number of protons as another atom of the same element, but a different number of neutrons.
Created by: susanmason



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