Counting Atoms Practice

How many atoms of each element are in NaCl?

• Na=1, Cl=1

• Na=2. Cl=2

• Na=1, Cl-2

Tags

NGSS.MS-PS1-1

How many elements are in this substance: CaCO₃

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.

Tags

NGSS.MS-PS1-5

How many Hydrogen atoms are in 4H₂O?

• 6

• 8

• 2

• 4

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in H₂SO₄ ?

• 6

• 5

• 7

• 3

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

• 4

• 2

• 8

• 24

Tags

NGSS.MS-PS1-1

How many atoms of Oxygen are in Fe(NO₃)₃ ?

• 6
• 3
• 9
• 1

Tags

NGSS.MS-PS1-1

How many atoms are present if there is no subscript following the element symbol?

• 0

• 2

• only 1

• 1 million

Tags

NGSS.MS-PS1-1

The ______ are numbers found on the lower right-hand side of an element symbol.

• Coefficient

• Exponent

• Multiplier

• Subscript

4CF₂Cl₂

• C = 4, F = 4, Cl = 2

• C = 1, F = 8, Cl = 8

• C = 4, F = 8, Cl = 8

• C = 1, F = 4, Cl = 8

Tags

NGSS.MS-PS1-1