States of Matter

Question 1

During what process does a substance’s particles change from a liquid to a solid

Answer 1

Freezing

Question 2

During what process does a substance’s particles change from a solid to a liquid?

Answer 2

Melting

Question 3

During what two processes does a substance’s particles change from a liquid to a gas?

Answer 3

Boiling and evaporation

Question 4

During what process does a substance’s particles change from a gas to a liquid?

Answer 4

Condensation

Question 5

During what process does a substance’s particles change from a solid to a gas?

Answer 5

Sublimation

Question 6

What causes matter to change from one state to another?

Answer 6

absorbing and releasing of heat

Question 7

Which state of matter takes the shape of the container it is placed in?

Answer 7

Liquid

Question 8

Which state of matter fills the container that it is placed in?

Answer 8

Gas

Question 9

At what temperature does water boil (degrees Celsius and Fahrenheit)?

Answer 9

100 degrees Celsius or 212 degrees Fahrenheit

Question 10

At what temperature does water freeze (degrees Celsius and Fahrenheit)?

Answer 10

0 degrees Celsius or 32 degrees Fahrenheit

Question 11

Water can change between states. For example, solid to a liquid. When water changes states, is
that a physical or a chemical change? Explain why.

Answer 11

Physical change-there is no chemical change that occurs-whether it is ice or in liquid form it is still
water (made up of the same molecules)

Question 12

If an object sinks in a beaker of water is it more dense or less dense than water?

Answer 12

More dense-particles or molecules are closely packed together (water the particles are moving
more freely therefore they are less dense)

Question 13

What is a mixture and a solution?

Answer 13

• mixture- a combination of two or more substances that DO NOT form a new substance;
• solution- a mixture with one substance spread out so evenly that you cannot tell the two
  substances apart

Question 14

List two examples of both a mixture and a solution.

Answer 14

• Mixture:
  i. Trail Mix
  ii. Different colored lego
• Solution:
  i. Lemonade
  ii. Coca-Cola

Question 15

What does it mean if an object is buoyant?

Answer 15

It means that the object can float, because buoyancy is the upward push of a liquid or gas on an
object

Question 16

What are some properties of matter? List at least 5.

Answer 16

• Mass
• Volume
• density
• temperature
• magnetism

Question 17

17.What is a physical change?

Answer 17

• physical change-a change in size, shape, or state of matter that does not change a
  substances composition

Question 18

What is a chemical change?

Answer 18

• chemical change- any change that creates a new substance by altering the chemical
  makeup of a compound. Evidence of this type of change could be in temperature, light,
  heat, or sound given off, and the formation of gasses

Question 19

List three examples of both a chemical change and physical change.

Answer 19

• Physical:
  o breaking glass
  o evaporating water
  o painting a wall
  o making lemonade
• Chemical:
  o a rusting bike
  o baking cookies
  o burning a piece of wood
  o exploding fireworks

Question 20

What is a solute and a solvent?

Answer 20

• Solute- a substance that is being dissolved into something else (sugar in lemonade)
• Solvent- the substance into which something is being dissolved it is doing the dissolving
  (water in lemonade)

Question 21

List which materials are the solute and solvent for the following drinks below.

Answer 21

• Lemonade: water, lemon juice, sugar
  i. Solute: lemon juice and sugar
  ii. Solvent: water
• Coca-Cola: water, carbon dioxide, flavoring
  i. Solute: carbon dioxide and flavoring
  ii. Solvent: water

Question 22

Matter

Answer 22

something that has mass and takes up space. It can be a solid, liquid, gas, or plasma.

Question 23

Mass

Answer 23

the amount of matter inside of an object. It does not change based on gravity. It is
measured in grams.

Question 24

Volume

Answer 24

the amount of space an object takes up

Question 25

Solid

Answer 25

a state of matter with a definite shape and volume. The particles in solid are tightly packed
together in a regular pattern.

Question 26

Liquid

Answer 26

a state of matter with a definite volume, but no definite shape. It takes the shape of the
container that it is in. The particles in a liquid are able to move and slide past one another, and are
not as tightly packed as a solid’s particles.

Question 27

Gas

Answer 27

a state of matter that does not have a definite shape or volume. It will fill the area/container it
is placed in. The particles in a gas are very loose and are able to slide past one another freely with
lots of room.

Question 28

Plasma

Answer 28

a very hot, gas-like state of matter that occurs naturally on the sun and other stars. It can
be produced/made in fluorescent lights and plasma TV’s