Lab Safety and States of Matter

1. If you break a piece of glassware or equipment, tell the teacher...

• at the end of class
• immediately
• the next day

2. When working with chemicals, liquids, and other lab equipment, you must wear...

• loose clothing
• goggles
• flip-flops

3. Which of the following is NOT a safe lab practice?

• Handling equipment correctly.
• Listening to instructions and working cooperatively with your lab partner.
• Wearing googles around your neck.

4. If you do not understand a direction or lab procedure, you should...

• figure it out as you go.
• skip the step and go to the next.
• ask the teacher before proceeding.

5. Horseplay (playing/messing around in class) and not following directions are...

• okay if you're working alone.
• okay as long as it's not dangerous.
• always against the rules.

6. It’s okay to mix chemicals without your teacher’s permission.

• True
• False

8. This object is...

• used to measure the mass of an object.
• worn whenever working with liquids or other dangerous substances.
• needed to measure the size of an object (length, width, height).
• needed to measure the volume of an irregular shaped object.
• needed when observing things that are very small.

10. This object is...

• used to measure the mass of an object.
• worn whenever working with liquids or other dangerous substances.
• needed to measure the size of an object (length, width, height).
• needed to measure the volume of an irregular shaped object.
• needed when observing things that are very small.

11. This object is...

• used to measure the mass of an object.
• worn whenever working with liquids or other dangerous substances.
• needed to measure the size of an object (length, width, height).
• needed to measure the volume of an irregular shaped object.
• needed when observing things that are very small.

12. What is the volume of the liquid shown in this picture?

• 3 ml
• 2.3 ml
• 2.6 ml
• 2.9 cups