Question

Choose the best answer.

In the middle of a chemical experiment, four students leave to check in with another teacher from a different class. Which rule is violated?

being serious in the lab

leaving an experiment unattended

eating and drinking in the lab
2.
Choose the best answer.

To explain how a chemical should be stored and handled, a _____ is used.

hazmat sign

poster

MSDS
3.
Choose the correct scientific notation.

0.0047 = ?



Read the scenario. Then, choose the best answers.

Joy wants to convert 542 pounds to kilograms. She knows the conversion factors are 1 lb = 0.45 kg.


4.
Choose the best answer.

Which conversion factor for pounds to kilograms in the train track should Joy use so the units cancel out?

Answer 1

1. Choose the best answer.
**leaving an experiment unattended**

2. Choose the best answer.
**MSDS**

3. Choose the correct scientific notation.
**4.7 x 10^-3**

4. Read the scenario. Then, choose the best answers.
**Joy should use the conversion factor of 0.45 kg/1 lb in the train track so the pounds unit cancels out.**