Physical Science 1st Semester Benchmark 23-24

When you finish working with chemicals, biological specimens, and other lab substances, always

• treat your hands with skin lotion
• wipe your hands on a towel
• wash your hands thoroughly with soap and water
• wipe your hands on your clothes

Hot glass looks the same as cold glass

• True
• False

If you do not understand a direction or part of a lab procedure, you should

• figure it out as you do the lab
• ask the instructor before proceeding
• try several methods until something works
• skip it and go on to the next part

Chipped or cracked glassware is okay to use.

• True
• False

Select the correct abbreviation for milliliter

• mL
• mm

Select the correct abbreviation for centimeter

• cg
• cm

Convert 2000 mg = _______ g

• 2
• 2,000,000

Convert 104 km = _______ m

• 104,000
• 0.104

A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant _____.

• speed
• velocity
• direction

The velocity of an object must include both a __________ and a ___________.

• speed, direction
• acceleration, speed
• positive, negative