Question

1. what instrument can you use to estimate when measuring liquids?

graduated cylinder
pipettes and burettes
beaker
mug

1. how should you test for odors in the lab?

smell directly over the container
gently waft the air toward your nose with your hand
use a straw to inhale the vapors
ask your lab partner to check for you

Explanation:

• For question 7: A beaker is used for approximate measurement of liquids. A graduated cylinder is for more precise measurement, pipettes and burettes for very precise, and a mug is not a scientific measuring instrument.
• For question 8: Gently wafting the air toward the nose with the hand is the safe way to test for odors in the lab. Smelling directly over the container or using a straw to inhale vapors can be dangerous (e.g., inhaling toxic fumes), and asking a lab partner is not the proper method.

Answer:

1. beaker
2. Gently waft the air toward your nose with your hand