Unit 1 Test_A

Why should safety goggles be worn when using chemicals?

• To keep your hair out of your eyes

• To protect your eyes from splashes and fumes

• To improve your vision in the lab

• To look professional

If a student's sleeve catches on fire, what equipment should you use?

• Fire extinguisher

• Eye wash station

• Fire blanket

• Safety shower

What is the safest clothing for working in a lab?

• Shorts and sandals

• Loose shirt and jewelry

• Long pants and closed-toed shoes

• Skirt and flip flops

What should you always do before starting a lab activity?

• Ask for a partner

• Read through the entire lab directions

• Guess the steps to save time

• Collect as much equipment as possible

Where should broken glassware be placed?

• Regular trash can

• Sink filled with water

• Special glass disposal container

• Anywhere if wrapped

What tool is best for measuring precise liquid volume?

• Beaker

• Erlenmeyer flask

• Graduated cylinder

• Test tube

Which tool is used to grind a solid into a powder?

• Mortar and pestle

• Funnel

• Spatula

Which of the following is a base unit?

• Gram

• Inch

• Pound

• Gallon

When setting up dimensional analysis, units that cancel go where?

• Same line

• Opposite sides of the fraction

• Top only

• Bottom only

Convert 45,000 into scientific notation.