Unit 1 and 2 Review

After completing an experiment, all chemical wastes should be

• dumped down sink
• taken home
• thrown in trash
• disposed of according to teacher's directions

Tags

NGSS.HS-LS2-7

You have been injured in the laboratory (cut, burn, etc.). First you should

• visit school nurse

• tell teacher immediately

• see a doctor after school

The proper technique for smelling chemicals is ______________

• keeping your nose close to the glassware

• wafting

When moving chemicals during labs, you should;

• Yell out "Code One" so that everyone clears a path for you to walk through

• Walking very fast

• Hold them securely and walk carefully

Horseplay or practical jokes in the laboratory are

• always against the rules

• OK

• a must since they are fun

When is it OK to eat or drink in the lab?

• Always
• Never

When in the lab...

• long sleeves and loose clothing should be rolled up
• closed toe shoes should be worn
• long hair should be pulled back
• all of the above

What is the last step in the scientific method?

• conclusion & communicate results

• ask a question

• form a hypothesis

Which of the following are qualitative?

• red pen

• 4 boys

• 2 plants

Select which of the following are quantitative? (Select all that apply)

• 14 desks

• blue sky

• 4 books

• sad girl