
Unit 7 Test Review
Authored by Amanda Michelle Lane
Science
7th Grade
NGSS covered
Used 114+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rust is a compound with the formula Fe2O3. What elements combine to form rust?
iron and water
iron and oxygen
iron and air
iron and acid
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What number and types of atoms occur in a formula unit of Ca(NO3)2?
1 carbon atom, 1 neon atom, and 6 oxygen atoms
1 calcium atom, 2 neon atoms, and 3 oxygen atoms
1 carbon atom, 1 nitrogen atom, and 3 oxygen atoms
1 calcium atom, 2 nitrogen atoms, and 6 oxygen atoms
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in one formula unit of the compound FeC5O5?
5
11
15
26
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms of carbon are included in one formula unit of the compound Na2C2O4?
2
4
6
8
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The compound potassium sulfate, K2SO4, is composed of
2 atoms of potassium, 1 atom of sulfur, and 4 atoms of oxygen.
2 atoms of potassium, 4 atoms of sulfur, and 4 atoms of oxygen.
two molecules of potassium and one molecule of sulfate.
one molecule of potassium and two molecules of sulfate.
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are in one formula unit of magnesium hydroxide, Mg(OH)2?
3
4
5
6
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The chemical formula for water is H20. What does the formula show about each element in the compound?
the number of valence electrons
the charge of the compound
the mass of protons in each atom
the number of atoms of each element
Tags
NGSS.MS-PS1-1
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