Changes from heat/Mixtures Review

1. A mixture can be created by ....

• combining two or more materials

• melting a solid to form a liquid

• blowing air throght a straw

2. 2. If a box of crayons was left in the car all the following could happen, except....

• the wax could become liquid

• the crayons could change shape.

• the paper wrappers could melt.

Tags

NGSS.MS-PS1-4

3. 3. What tool can be used to easily separate a mixture of iron and plastic paper clips?

• magnet

• beaker

• balance

4. 4. As an ice cube melts, what will change?

• What it’s made of

• shape

• Where it is

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

5. 5. All of the following are mixtures EXCEPT –

• peanuts and raisins together

• a trail mix

• glass marbles

6. 6.Students heated a sample of water in a container. Later, the container appeared to be empty. The heat caused the water to -

• melt

• freeze

• evaporate

Tags

NGSS.MS-PS1-4

7. 7. How do we know that a salad is a mixture?

• The items in the salad are mostly solid.

• The salad is made up of different types of food.

• Bits of the salad can be picked up with a fork.

8. 8. Which of the following is always true about mixtures? A mixture is always -

• a solid combined to a liquid

• impossible to separate

• made of two or more materials

9. 9.A glass of water was left outside on the coldest day of the year. The low temperature could make what change in the water? The water would –

• turn into ice

• become heavier

• change color

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

11.Which of the following would create a mixture?

• Adding sand to gravel

• heating a sample of salt

• filling a beaker with ice