Atoms in Chemical Formulas - Modified (1)

Multiple Select

What are the components represented in chemical formulas?

• Atoms

• Molecules

• Ions

• Compounds

Draw

Draw a circle around the number that tells you the number of molecules in a chemical formula

Drag and Drop

How many elements are in 2 C₆H₁₂O₇?

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How many C: ​

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How many H: ​

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How many O: ​

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How many TOTAL atoms: ​

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Drag these tiles and drop them in the correct blank above

3

12

24

14

50

7

6

25

52

60

Multiple Choice

How many hydrogen atoms are in a molecule of sugar? C₁₂H₂₂O₁₁

• 12

• 22

• 11

• 45

Fill in the Blanks

Multiple Choice

Look at the picture. This is a molecule of ammonia, which we use for cleaning. How many atoms are in it? (The total number, not how many types)

• One

• Two

• Three

• Four

Multiple Choice

How many phosphorus atoms are there?

• 0

• 1

• 3

• 4

Multiple Choice

How many nitrogen atoms are there?

• 4

• 8

• 10

• 20

Multiple Choice

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

Match

Match the element to the number of atoms it has.

2 Al(C₂H₃O₄)₂

• aluminum

• carbon

• hydrogen

• oxygen

2

8

12

16

• 2

• 8

• 12

• 16

Match

Match the formula to the description:

• SO₃

• 2 SO₃

• 2 S₂O₃

• 3 SO₄

• SO₄

1 sulfur, 3 oxygen's

2 sulfur's, 6 oxygen's

4 sulfur's, 6 oxygen's

3 sulfur's, 12 oxygen's

1 sulfur, 4 oxygen's

• 1 sulfur, 3 oxygen's

• 2 sulfur's, 6 oxygen's

• 4 sulfur's, 6 oxygen's

• 3 sulfur's, 12 oxygen's

• 1 sulfur, 4 oxygen's

Reorder

Put the elements in order from smallest to largest number of atoms:

2 C₃H₅(NO₃)₄

• Nitrogen

• Carbon

• Hydrogen

• Oxygen

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

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

Multiple Choice

Number of N in (NH₄)₂CrO₄

• 1
• 2
• 8
• 16

Match

4CF₂Cl₃

• carbon

• fluorine

• chlorine

4

8

12

• 4

• 8

• 12

Reorder

Put the elements in order from smallest to largest number of atoms:

2 C₃H₅(NO₃)₄

• carbon

• nitrogen

• hydrogen

• oxygen

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

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

• 6
• 3
• 9
• 1

Drag and Drop

2 CH₂CO₃OH

Number of C: ​

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Number of H: ​

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Number of O: ​

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Drag these tiles and drop them in the correct blank above

4

6

8

2

3

1

5

7

9

10