Counting Atoms Practice Set 1
Authored by Glenna Kendall
Science
6th - 8th Grade
NGSS covered
Used 19+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does the subscript in a chemical formula tell you?
How many molecules are present
How many atoms are present
How many elements are present
How many neutrons are present
Answer explanation
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
How many atoms of Iron are in this compound?
1
2
3
4
Answer explanation
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
A substance made up of atoms of two or more different elements joined by chemical bonds
Molecule
compound
polar covalent bond
nonpolar covalent bond
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Calculate the number of Oxygen atoms in Al(OH)3
1
2
3
4
Answer explanation
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
How many total POTASSIUM atoms are in this formula?
8
2
4
12
Answer explanation
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Coefficients in chemical formulas...
Multiply just the first atom
Add to the subscripts at the end of the molecule
Multiply elements without subscripts
Multiply EVERYTHING!
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Number of H in 3(NH₄)₂CrO₄
Tags
NGSS.MS-PS1-1
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