Semester 1 test

1. Rachel was excited to get to class because she knew they were doing an experiment. When she entered the room she saw all of the materials on her table. Since she was familiar with all of the materials, she put on her goggles and got started. What lab rule did Rachel break?

• A. Keep your area neat and clean.
• B. Wear proper protective gear during a lab.
• C. Read all the directions before starting any lab.
• D. Know the location and use of all safety equipment.

2. At the completion of a lab, a group of 4 students realize that their materials are all spread out and mixed together. What should they do before leaving the lab area?

• A. Push all of the materials to one side of the table.
• B. Clean the lab area thoroughly and return the materials to the proper location.
• C. Leave the lab area for the next group to clean.
• D. Make two of the lab members clean the area, while the other two watch.

3. The proper way to use goggles is to place them over your eyes and remove them any time you need to look more closely at a chemical reaction taking place.

• True
• False

4. What would rulers, triple beam balances, and beakers be useful for?

• A. Following all safety rules in the lab.
• B. Observing the chemical properties of substances.
• C. Measuring the mass, length, and volume of substances.
• D. Performing experiments in the lab.

5. Two students needed to transfer a small amount of liquid from a beaker into a test tube. Which of the following is the best way to accomplish this task?

• A. Use an eye dropper or pipette to carefully transfer the liquid.
• B. Use a small spoon or scoop to carefully transfer the liquid.
• C. Slowly pour the liquid from the beaker into the test tube.
• D. Carefully dip the end of the test tube into the beaker to fill it with the necessary liquid.

6. Which of the following should not be used on a person under any circumstance?

• A. Fire blanket
• B. Fire extinguisher
• C. Eye wash station
• D. Safety shower

7. When using the eye wash station, you should close your eyes so that the water does not flush substances further into your eyes.

• True
• False

8. What is density?

• The amount of matter in an object.
• The amount of mass in a given volume.
• The amount of space an object takes up.
• The shape of an object.

9. Why are pots and pans typically made up of various metals?

• Metals are poor conductors.
• Metals are good conductors.
• Metals are good insulators.
• Metals stay hot longer.

10. Gold is an element that is often used to make necklaces, rings, and other types of jewelry. What property of gold makes it useful in this way?

• Gold is a conductor.
• Gold is an insulator.
• Gold is malleable.
• Gold has a high melting point.