Science Unit 2 Test Review - MATTER

All objects contain matter. Which statement is true?

• Matter is usually measured in millilitres.

• The shape of an object is what gives it matter.

• Matter is a measurement of how big an object is.

• As matter is added to an object, its weight increases.

Which is true about a gas?

• It changes to a liquid when it heats up.

• It takes up a definite amount of space.

• It takes up a definite amount of space, but does not have a definite shape.

• It does not take up a definite amount of space and does not have a definite shape.

Ming wants to find out if air takes up space. Which experiment would be help her find this out?

• Fill a cup with water. Fill another cup with air. Weigh both cups.

• Weigh an empty metal container. Place a lid on it. Weight it again.

• Blow up a balloon. Tie a knot to make sure it is closed. Try to flatten the balloon.

• Put red food coloring in an empty bottle. Place a cap on the bottle. Shake the bottle to see if the air inside turns red.

Mary compares the weights of a rock and a soccer ball using a pan balance. What does the picture show about the rock and the soccer ball?

• The rock and the ball have the same weight.

• The rock has a greater volume than the soccer ball.

• The rock is smaller than the ball but has more weight.

• The ball has more matter than the rock, so it has more weight.

What is matter?

• anything that takes up space

• the amount of matter an object has

• the amount of space an object takes up

• the measure of how warm something is

Bob found a metal can of soup. Which list likely describes the most likely physical properties of the can?

• shiny, hard, reflective

• very soft, conducts heat

• conducts electricity, square

• magnetic, flexible, very soft

Which object has a physical property that conducts electricity?

• foam cup

• metal fork

• plastic knife

• wooden spoon

Lezza wants to show her classmates an example of solubility. Which of these should she show?

• Pour a spoonful of salt into a glass of water.

• Place a metal fork in a circuit to see if a light bulb shines.

• Place a rock in a beaker of water to find the volume of the rock.

• Pour a spoonful of salt into a balance to find the weight of the salt.

Which are examples of mixtures?

1. 1. Powdered sugar dissolves in water.
2. 2. A solid candy bar melts into a liquid.
3. 3. Paper catches on fire and turns into ash.
4. 4. Several metals are mixed together to form an alloy.

• 1 and 4

• 2 and 3

• 3 and 4

• 1, 2, and 4

When a candle wick burns, the wax around the wick melts and appears to become smaller in size. Which statement is true?

• All the changes taking place are physical changes.

• All the changes taking place are chemical changes.

• Some of the wax matter will vaporize into the air, lessening what could be weighed on a scale.

• The weight of the matter is the same before and after it is burned.