Chem Unit 1 Practice Test

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

• scientific method
• recipe
• data collection
• metric system

Testing a hypothesis often involves a(n):

• answer
• experiment
• problem
• safety check

Tags

NGSS.MS-ETS1-4

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?

• increase the amount of iron in your blood
• spinach you eat

If I ride my bike to school instead of walking, then I will get to school faster. What is the dependent variable?

• True
• How fast you get to school
• Riding a bike or walking
• False

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Milk takes the shape of its container because it is a:

• solid
• liquid
• gas

How is a gas defined?

• no shape, no volume
• Definite shape, definite volume
• Found in stars
• Definite volume, no shape

Which of the following could indicate that a chemical change took place?

• Change in color

• Production of Energy

• Formation of Gas

• All are correct

Tags

NGSS.MS-PS1-2

The formation of a solid when two liquids combine is called?

• Solidification

• Freezing

• Precipitate

• Solubility

Tags

NGSS.MS-PS1-2

The difference between a Physical change and a Chemical change is…

• Physical change is only a change to the outside appearance.

• Chemical change is when matter is changed into something new.

• Atoms are rearranged in chemical changes & not in physical.

• All are correct.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4