Chemistry Unit 1

When you finish working with chemicals, biological specimens, and other lab substances, always

• Wash your hands with soap and water
• Wipe your hands on a towel
• Treat your hands with lotion
• Wipe your hands on your clothes

Approved eye protection devices (such as goggles) are worn in the laboratory

• To improve your vision
• To avoid eye strain
• Only if you don't wear corrective glasses
• Anytime chemicals, heat, or glassware are used

After completing an experiment, all chemical wastes should be

• disposed of according to the teacher's directions
• dumped in the sink
• left for the next class
• taken home

Tags

NGSS.HS-ESS3-4

A good experiment will yield accurate results if it has:

• A really strong hypothesis
• Only one manipulated variable
• 1 or 2 trials maximum
• Two separate responding variables.

Tags

NGSS.MS-ETS1-4

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

Tags

NGSS.MS-ETS1-4

Which form of matter does not take the shape of its container?

• liquid
• gas
• solid
• air

State of matter with no definite shape or volume.

• solid
• liquid
• gas
• Mississippi

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

What state of matter does the picture best describe?

• Solid
• Liquid
• Gas

Tags

NGSS.HS-PS1-3

If reaction starts with 20g of reactants, it will produce ---

• a total of 40g of product

• a total of 10g of product

• a total of 80 g of product

• a total of 20g of product

Tags

NGSS.MS-PS1-5

What type of mixture is this?

• homogenous mixture
• chemical
• heterogeneous mixture 
• solid mix