Counting Atoms and Chemical Reactions

What is the number 3 in the following compound?

2KClO₃

• Exponent

• Synthesis

• Coefficient

• Subscript

What is the number 4 in the following compound?

4HCl₂

• Exponent

• Synthesis

• Coefficient

• Subscript

How many atoms are in the following compound?

• 14

• 4

• 10

• 2

Tags

NGSS.MS-PS1-1

How many atoms are in the following equation?

2(KClO₃)

• 6

• 18

• 10

• 5

Tags

NGSS.MS-PS1-1

How many atoms are in the following equation?

3Mg(C₃H₆O₃)₂

• 17

• 38

• 72

• 75

Tags

NGSS.MS-PS1-1

Is the following equation balanced?

HgO -> Hg + O₂

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is the following equation balanced?

CH₄ + 4Cl₂ -> CCl₄ + 4HCl

• Yes

• No

Tags

NGSS.MS-PS1-5

Is the following equation balanced?

CaO + C -> CaC₂ + CO

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is the following equation balanced?

3HClO₂ -> 2HClO₃ + HCl

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction is the following equation?

2C + 2O₂ -> 2CO₂

• Decomposition

• Single Replacement

• Synthesis

• Double Replacement