Quiz 4: Chapters 7 and 8

Question 1

The addition of electrons to a substance is one definition for:

Answer 1

Reduction

Question 2

Hydrogen:

Answer 2

Burns

Question 3

In a chemical equation, the substance that is reduced is the _____

Answer 3

Oxidizing agent

Question 4

Oxygen:

Answer 4

Supports combustion

Question 5

The addition of oxygen to a substance is one definition for:

Answer 5

Oxidation

Question 6

Zinc is listed above hydrogen in the electrochemical series, it will:

Answer 6

Displace hydrogen from dilute acids

Question 7

Which is not a factor affecting reaction rates?

• Catalysts
• Carbon content
• Temperature
• Light

Answer 7

Carbon content

Question 8

If sodium goes from it +1 to a zero oxidation state then sodium is:

Answer 8

Reduced

Question 9

Allotropes occur when an element exists in two or more different forms, each with its own physical and chemical properties. (T/F)

Answer 9

True

Question 10

Potassium, calcium, and sodium which are listed at the very top of the electrochemical series, will displace the hydrogen from water as well as from dilute acids. (T/F)

Answer 10

True