Physical Science Nine Weeks Exam

Front

What should always be worn in a chemistry lab? Options: Sunglasses, Lab coat, Flip-flops, Shorts

Back

Lab coat

Front

What should you do if you spill a chemical on your skin?

Back

Rinse immediately with water

Front

Which of these should never be used in a laboratory? Broken glassware, Safety goggles, Properly labeled chemicals, Fume hood

Back

Broken glassware

Front

In case of a fire in the lab, you should:

Back

Use a fire extinguisher if it's safe to do so

Front

What is the first thing you should do before starting an experiment?

Back

Read and understand the instructions

Front

What is the charge of a proton?

Back

Positive

Front

Where are electrons located in an atom?

Back

Orbiting the nucleus

Front

Which of these subatomic particles has no charge? Proton, Neutron, Electron, Positron

Back

Neutron

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus

Front

What is true about the atomic mass of an element?

Back

It is the sum of protons and neutrons.