Balancing Chemical Reactions

How many different types of elements are there in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in H₂SO₄

• 6

• 5

• 7

• 3

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-5

The blue numbers in the image below represent ________

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

Tags

NGSS.MS-PS1-5

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

In the equation, 2Mg + O₂ ---> 2MgO , which are the reactants?

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-2

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1

Number of H in 3(NH₄)₂CrO₄

• 4
• 2
• 8
• 24

Tags

NGSS.MS-PS1-1

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction. 

Tags

NGSS.MS-PS1-5