Science 7B

Question 1

What does a biohazard symbol indicate in a laboratory setting?

Answer 1

It indicates the presence of biological materials that pose a risk to health.

Question 2

True or False: A flammable material sign indicates that the substance can easily catch fire.

Answer 2

True

Question 3

Fill in the blank: The _____ sign warns of radiation hazards in the area.

Answer 3

radiation

Question 4

What color is typically used for electrical hazard signs?

Answer 4

Yellow

Question 5

Multiple Choice: Which sign would you expect to see in an area with chemicals that can cause burns? A) Biohazard B) Corrosive C) Flammable

Answer 5

B) Corrosive

Question 6

What is the main function of a Bunsen burner?

Answer 6

To provide a controlled flame for heating substances in a laboratory.

Question 7

True or False: The air intake of a Bunsen burner controls the amount of gas flowing into the burner.

Answer 7

False

Question 8

Fill in the blank: The part of the Bunsen burner that adjusts the air supply is called the _____ valve.

Answer 8

air

Question 9

What are the two main types of flames produced by a Bunsen burner?

Answer 9

Luminous flame and non-luminous flame.

Question 10

Multiple Choice: Which part of the Bunsen burner is used to ignite the gas?

Answer 10

A. Spark lighter