Physical Science Final Exam

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

• Mix chemicals together

• Put on safety goggles

• Read the lab manual

• Light the Bunsen burner

Which of the following is an example of a physical change?

• Rusting of iron

• Burning of wood

• Freezing water into ice

• Cooking an egg

The smallest unit of an element that maintains its chemical properties is:

• A. A molecule

• B. An atom

• C. A compound

• D. A proton

Which of these is a chemical property?

• Melting point

• Density

• Flammability

• Shape

Tags

NGSS.MS-PS1-5

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

• Wipe it off with a paper towel

• Continue your experiment

• Rinse with water for 15 minutes

• Cover it with a bandage

Elements in the same column of the periodic table share what characteristic?

• Atomic mass

• Number of neutrons

• Chemical properties

• Physical appearance

Which state of matter has a definite volume but no definite shape?

• Solid

• Liquid

• Gas

• Plasma

During a chemical change:

• Only the appearance changes

• New substances are formed

• The shape changes temporarily

• Temperature always increases

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What information is NOT found on the periodic table?

• Atomic number

• Chemical symbol

• Expiration date

• Atomic mass

Which safety equipment should be located nearest to the lab station?

• First aid kit

• Eye wash station

• Fire extinguisher

• Safety shower