Science Test 2/2

Question 1

What’s the difference between Fahrenheit and Celsius?

Answer 1

They have different freezing points and boiling points of water. Fahrenheit is only used in 5 countries, while Celsius is used all around the world.

Question 2

How does temperature affect the motion of particles?

Answer 2

When something is hot, the space between particles get bigger. When it’s cold, particles move close together.

Question 3

Correctly draw the particles in a solid

Answer 3

°°°°°°

close together

Question 4

Describe a solid by volume + shape

Answer 4

A solid is matter with a fixed shape and volume.

Question 5

Correctly draw the particles in a liquid

Answer 5

° ° ° °
° ° °
° ° °

(spread out)

Question 6

Describe a liquid by volume + shape

Answer 6

A liquid is matter with a fixed volume, but not a fixed shape.

Question 7

Correctly draw the particles in a gas.

Answer 7

°         °
       °    
   °       °
      °
(very spread out)

Question 8

Describe a gas by volume + shape.

Answer 8

A gas is matter without a fixed shape or volume.

Question 9

How do particles change when a solid turns into a liquid?

Answer 9

Heat goes into the solid, making the particles move faster.

Question 10

How do particles change when a liquid turns into a gas?

Answer 10

Heat goes into the liquid making particles move faster.

Question 11

Compare elements, compounds, and mixtures

Answer 11

elements are made up of identical atoms bonded together and have unique properties;
they can’t be separated into simpler unique substances.

compounds consist of two or more kinds of atoms bonded together;
they have unique, fixed properties not related to the properties of the components.
the can be separated into elements using chemical means such as electrolysis.

mixtures consist of two of more kinds of atoms or molecules mixed together, but not bonded.
they have properties that are an average of the properties of the components.
the properties can vary depending on the proportions of the components in the mixture
they can be separated into simpler materials by physical means such as distillation, filtration, chromatography, etc.