Reactants and Products Lesson

When coal is burned, sulfur is released into the air, where it reacts with oxygen to produce sulfur dioxide and sulfur trioxide. Which of these is true of this process?

• The identity of each reactant remains the same.

• Sulfur dioxide and sulfur trioxide are the reactants in this change.

• The products have different chemical properties than those of the reactants.

• The products contain more sulfur atoms and fewer oxygen atoms than the reactants.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The substances listed on the right side of a chemical equation are the

• Yields

• Reactants

• Products

• Precipitates

Tags

NGSS.MS-PS1-5

When paper is burned, the mass of the remaining ash is less than the mass of the original paper. Which statement best explains this result?

• The ash has less volume than the paper.

• Some of the matter is destroyed during the reaction.

• The mass of the ash cannot be accurately determined.

• Some of the products of the reaction were given off as a gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which substance is a product in this reaction?

• carbon (C)

• oxygen (O₂)

• water (H₂O)

• ethane (C₂H₆)

Tags

NGSS.MS-PS1-2

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many molecules of KNO₃ are shown?

• 1

• 2

• 3

• 4

Select all the Products

• 
• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select all the products

• 
• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is underlined in the chemical equation below?

Na + Cl ---> NaCl

• Products

• Reactants

The substances present BEFORE a reaction occurs are called______.

• Products

• Exponents

• Factors

• Reactants

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2