Pre-test: Mixing Matter A

1.

Multiple Select

45 sec

1 pt

"Substance" is another word for material. It's anything you can touch. For example, water is a substance. Salt is a substance. Gold is a substance.

true

2.

Multiple Choice

30 sec

1 pt

Gold, iron, and oxygen are all ___________.

experiments

elements

data

animals

3.

Multiple Choice

30 sec

1 pt

What do carbon, silver, and hydrogen have in common?

They are all Liquids only.

They are all green.

They are all elements.

They are all hot.

4.

Multiple Choice

30 sec

1 pt

Hydrogen and oxygen bond to make water.

What does "bond" mean?

move up and down

make a copy

join together

split up

5.

Multiple Choice

30 sec

1 pt

What does "bond" mean?

split up

copy

join together

6.

Multiple Choice

30 sec

1 pt

Sometimes, matter changes in shape or state, but NO NEW chemical is made. What do we call this?

a physical change

a chemical change

a bad change

7.

Multiple Choice

30 sec

1 pt

In a physical change, there is just a change of state or shape.

Ice melting is an example of a ________.

physical change

chemical change

no change

8.

Multiple Choice

30 sec

1 pt

In a CHEMICAL change, a new chemical substance is made.

true

false

9.

Multiple Choice

30 sec

1 pt

A chemical change is a chemical reaction.

true - They mean the same thing.

false

10.

Multiple Choice

30 sec

1 pt

In a chemical change, at least one chemical is changed into ____________.

another animal

another chemical

11.

Multiple Choice

30 sec

1 pt

Which is a chemical change (or reaction)?

baking a cake

ripping a cloth

melting ice

12.

Multiple Choice

30 sec

1 pt

Which is a chemical change (or reaction)?

rust forming on a metal nail

mixing M&M's and peanuts in a bowl

boiling water

13.

Multiple Choice

30 sec

1 pt

Which is a chemical change (or reaction)?

mixing salt and water

mixing pennies and nickles

vinegar mixed with baking soda

14.

Multiple Choice

30 sec

1 pt

Page 13 of your eBook shows ______ ways to tell that a chemical change has happened.

2

5

20

36

15.

Multiple Choice

30 sec

1 pt

Which one is a sign that a chemical change has happened?

something changes colors

change in size

noise

16.

Multiple Choice

30 sec

1 pt

Which one is a sign that a chemical change has happened?

It's lunch time.

change in size

new smell (or odor)

17.

Multiple Choice

30 sec

1 pt

Which one is a sign, or clue, that a chemical change has happened?

melting butter

crushing

new gases or solids appear

18.

Multiple Choice

30 sec

1 pt

Which one is a sign, or clue, that a chemical change has happened?

The change is hard to undo.

The change is easy to undo.

The change is pretty.

19.

Multiple Select

45 sec

1 pt

How do we know that this is a chemical reaction?

What are the signs, or clues?

the change is hard to undo

fire

gas bubbles (or foam)

20.

Multiple Select

45 sec

1 pt

How do we know that this is a chemical reaction?

What are the signs, or clues?

none

new animal

color change

temperature change (heat from the fire)

21.

Multiple Select

45 sec

1 pt

How do we know that this is a chemical change?

What are the signs, or clues?

sound

melting

color change

a new solid is made (the rust is a new solid)

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