8th Grade Science Semester Exam Review

Front

What does the safety symbol indicating corrosive chemicals mean?

Back

Caution: Chemicals in this lab are corrosive.

Front

What should a student do FIRST after breaking a beaker?

Back

Tell the teacher about the accident.

Front

How do you measure the volume of a liquid in a beaker?

Back

Read the measurement at the meniscus level, typically in mL.

Front

What does the Law of Conservation of Mass state?

Back

That the mass in chemical reactions cannot be created nor destroyed, just rearranged.

Front

What is net force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

If Jack pulls with 82 N East and Tony pulls with 96 N West, what is the net force?

Back

14 N West.

Front

What is the definition of acid rain?

Back

Precipitation that contains high levels of sulfuric or nitric acids, often due to pollution.

Front

What safety equipment should be used when handling corrosive substances?

Back

Safety gloves and goggles.

Front

What is the purpose of a lab safety symbol?

Back

To communicate potential hazards and necessary precautions.

Front

How do you calculate the density of an object?

Back

Density = Mass / Volume.