
Atomic Structure Review
Authored by Amy Hollis
Science
6th - 9th Grade
NGSS covered
Used 22+ times

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10 questions
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1.
MATCH QUESTION
15 mins • 3 pts
Match the Following
A substance that cannot be broken down into simpler substances by chemical means.
Element
The dense center of an atom containing protons and neutrons.
Atom
Particles with a neutral charge found in the nucleus of an atom.
Proton
The smallest unit of an element that keeps the element’s chemical properties.
Neutron
Positively charged particles found in the nucleus of an atom.
Nucleus
Tags
NGSS.MS-PS1-1
2.
MATCH QUESTION
15 mins • 3 pts
A substance formed from two or more atoms chemically united in fixed proportions.
Molecule
Areas around the nucleus filled with electrons.
Electron Shell
A negatively charged subatomic particle located around the nucleus of an atom.
Compound
A group of atoms held together by chemical forces.
Electron
The electrons filling the outermost shell; react with other atoms.
Valence Electron
Tags
NGSS.MS-PS1-1
3.
MATCH QUESTION
15 mins • 3 pts
All known elements arranged in order by atomic number.
Family/Group
Elements that are malleable, ductile, and good conductors; typically shiny.
Periodic Table
Horizontal rows of elements that have the same number of electron shells.
Atomic Mass/Mass Number
The average number of protons and neutrons in one atom of an element.
15) Metal
Vertical columns of elements that have the same amount of valence electrons.
Period
4.
MATCH QUESTION
15 mins • 3 pts
Elements that are brittle, poor conductors, and have low melting and boiling points.
Noble Gas
Elements in group 18 that have very low reactivity.
Nonmetal
An element that has properties that fall between metals and nonmetals.
Metalloid
5.
REORDER QUESTION
15 mins • 5 pts
Using a periodic table (you can use the one in the textbook) order the following elements by mass number, least to greatest.
Gallium
Thallium
Hydrogen
Radon
Boron
6.
REORDER QUESTION
15 mins • 5 pts
Using a periodic table (you can use the one in the textbook) order the following elements by # of Electron Shells, least to greatest.
Sodium
Barium
Calcium
Strontium
Dubnium
7.
REORDER QUESTION
15 mins • 5 pts
Using a periodic table (you can use the one in the textbook) order the following elements by # of valence electrons, least to greatest.
Barium
Potassium
Oxygen
Carbon
Neon
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