Chemistry 1/2 Review SM and D

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• recipe
• data collection
• metric system

This variable in an experiment is the one being changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Tags

NGSS.MS-PS2-2

What is a hypothesis?

• A hypothesis is the right answer to an experiment.
• A hypothesis is the wrong answer to an experiment.
• A hypothesis is an educated guess.
• I don't know.

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• responding variable

Tags

CCSS.RI.11-12.3

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

What is the first step in the scientific method?

• Ask a question
• Conclusion
• No Horse Play
• Observe

Tags

NGSS.K-2-ETS1-1

Which side of a penny will hold more drops of water? Choose the best hypothesis.

• If I use the heads side of a penny, then it will hold more drops of water than tails.
• Heads
• Tails
• Tails will hold more drops of water.

Why do ice cubes float in a  glass of water?

• the ice cubes are more dense than the water
• the water is more dense than the ice cubes
• the water is more dense than the glass
• the ice is more dense than the glass

Why do objects sink or float in H₂O? 

• Because their densities are higher or lower than compared to water
• Because their densities are using gravity to pull down
• Because their densities are heavier or lighter
• Because their mass and volumes are equal 

How does the mass of a bowling ball on Earth compare to its mass on the moon?

• The mass will be greater on the moon
• The mass will be less on the moon
• The mass will stay the same