Question

you are heating a substance in a test tube. always point the open end of the tube

• 1 point

toward yourself
toward your lab partner
toward another classmate
away from all people
you are heating a piece of glass and now want to pick it up. you should *
use a rag or paper towels
pick up the end that looks cooler
wait long
pour cold water on it

Explanation:

When heating a substance in a test tube, pointing the open - end away from all people is a safety precaution to prevent splashes or spills from causing harm. For handling heated glass, using a rag or paper towels protects the hands from burns as glass can retain heat and look the same as when it was cool.

Answer:

For the first question: away from all people.
For the second question: use a rag or paper towels.