Reading Check pg. 11

Before you start a science activity, you need to know the rules and instructions that the teacher and, in some cases, instruction manuals give you.

1. What do you need to know before you start a science activity?

You should dispose of the glassware that has a small chip or nick in it. You should dispose of it in the broken glass bucket.

2. What should you do if you begin using a piece of glassware and then discover it has a small chip or nick in it?

In the sentence; "Never taste a chemical.", it is incomplete because it does not tell you about never smelling the chemical directly, or never putting anything in your mouth even if it is not a chemical.

3. Explain what is incomplete about the following rule: Never taste a chemical.

With a chemical in a container that does not have a label or is unreadable, do not use it and bring it to your teacher.

4. What should you do with a chemical container that has a label you cannot read?

To safely smell a substance, gently waft the air above the substance towards you at arms length. Slowly bring the substance closer to your nose until you can smell it.

5. Describe the safe way to smell a substance.