Quiz about Counting Atoms and Molecules

Question 1

How many Oxygen atoms are in 4H₂O(F₂Mg)₂?

Accepted Answer

4

Answer

6

Answer

8

Answer

2

Question 2

How many elements are in C₆H₁₂O₆C?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 3

How many atoms are there TOTAL in:

H₂(SO₄)₃

Accepted Answer

17

Answer

10

Answer

12

Answer

7

Answer

15

Question 4

How many Sodium (Na) are in 6Na₂Cl?

Accepted Answer

12

Answer

1

Answer

6

Answer

2

Question 5

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

Accepted Answer

H3SO4

Answer

HSO4

Answer

H4S3O

Answer

H2O

Question 6

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

Accepted Answer

element symbol; atoms

Answer

atom; element symbol

Answer

subscript; protons

Answer

compound; elements

Question 7

How many total atoms are in the compound C₂H₈O ?

Accepted Answer

11

Answer

2

Answer

8

Answer

1

Question 8

How many atoms of each element are in NaCl?

Accepted Answer

Na=1, Cl=1

Answer

Na=2. Cl=2

Answer

Na=1, Cl-2

Question 9

HCl has how many atoms of each element?

Accepted Answer

H=1, Cl=1

Answer

H=2, Cl=2

Answer

H=3, Cl=1

Question 10

C₆H₁₂O₆has how many total atoms?

Accepted Answer

24

Answer

6

Answer

12

Question 11

C₁₂H₂₂O₁₁has how many carbon atoms?

Accepted Answer

12

Answer

1

Answer

11

Answer

45

Question 12

How many elements are in this compound?... NaHCO₃

Accepted Answer

4

Answer

3

Answer

5

Answer

6

Question 13

How many elements are in this substance: CaCO₃

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 14

We used baking soda before in a chemical reaction. How many molecules of it are represented here? 3 NaHCO₃

Accepted Answer

3

Answer

1

Answer

4

Question 15

The blue numbers in the image below represent ________

Accepted Answer

subscripts

Answer

I don't know, and don't want to try

Answer

coefficients

Answer

none of the answers are correct

Question 16

The red numbers in the image below represent ________

Accepted Answer

coefficients

Answer

subscripts

Answer

I don't know, and don't want to try

Answer

None of the answers are correct

Question 17

5CO_{2
How many molecules are there? How many elements?}

Accepted Answer

5 molecules, 2 elements

Answer

2 elements, 5 molecules

Answer

10 atoms, 5 elements

Answer

15 elements, 2 molecules

Question 18

3CO₂FBe₄

_{How many molecules are there? How many elements?}

Accepted Answer

3 molecules, 4 elements

Answer

2 elements, 5 molecules

Answer

2 Molecules, 4 elements

Answer

3 elements, 3 molecules

Question 19

Black = Carbon (C)
White = Hydrogen (H)
What would be the formula for ethane?

Accepted Answer

C2H6

Answer

CH4

Answer

CH6

Answer

C2H2

Question 20

What is a valence electron?

Accepted Answer

An electron in the outer most occupied energy level of an atom

Answer

An electron that has properties similar to a transition metal

Answer

Electrons with high reactivity

Answer

Noble gases

Question 21

How many total atoms are in Sulfuric Acid?

H₂SO₄

Accepted Answer

7

Answer

2

Answer

6

Answer

3

Question 22

If I have two molecules of Sodium Nitrate, how many total atoms are there?

2NaNO₃

Accepted Answer

10

Answer

5

Answer

3

Answer

11

Question 23

How many total atoms are in Ammonium Sulfate?

3(NH₄)₂SO₄

Accepted Answer

45

Answer

33

Answer

30

Answer

40

Question 24

How many molecules of water do I have?

4H₂O

Accepted Answer

4

Answer

2

Answer

3

Answer

10

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