Quiz about Unit 1 Study Guide

Question 1

The image shows particles flowing by each other. Which state of matter is most likely represented in the image?

Accepted Answer

Liquid

Answer

Solid

Answer

Gas

Answer

Plasma

Question 2

Polly did an experiment with marbles in a glass bowl to show the movement of particles in solids, liquids and gases. The experimental set up is shown in the picture. What should Polly do to represent the particles of a solid?

Accepted Answer

Pack the bowl with marbles and then tap it gently.

Answer

Add two more marbles to the bowl and then shake it slowly.

Answer

Take out two marbles from the bowl and then shake it vigorously.

Answer

Add water to the bowl so that the marbles start sliding past one another.

Question 3

Describe what happens to the particles in a chocolate bar as it melts.

Accepted Answer

As the chocolate bar changes from a solid to a liquid the particles move around more.

Answer

As the chocolate bar changes from a solid to a liquid a chemical change happens.

Answer

As the chocolate bar changes from a solid to a liquid the particles slow down.

Answer

As the chocolate bar changes from a solid to a liquid, the particles move the same speed but they take on the shape of their container

Question 4

Choose all of the physical changes:

(There are THREE)

Accepted Answer

melt

Accepted Answer

dissolve

Accepted Answer

bend

Answer

tarnish

Answer

react

Question 5

Choose all of the chemical changes:

(There are THREE)

Accepted Answer

rust

Accepted Answer

burn

Accepted Answer

tarnish

Answer

dissolve

Answer

break

Question 6

Check all of the indicators that a chemical change has occurred:

Accepted Answer

bubbles or fizzes

Accepted Answer

temperature change

Accepted Answer

unexpected color or odor change.

Accepted Answer

formation of a precipitate

Answer

change in state

Question 7

The diagram shows the layers formed when 10 mL each of honey, maple syrup, and corn syrup were slowly poured into a glass cylinder.

A ping pong ball released gently into the cylinder floats on top of the corn syrup layer. What best compares the densities of the substances?

Accepted Answer

All liquids are denser than the ball, and honey is denser than corn syrup and maple syrup.

Answer

Honey is denser than corn syrup but less dense than the ball.

Answer

Corn syrup is denser than the other liquids, and the ball is denser than the liquids.

Answer

Corn syrup is denser than the other liquids and the ball.

Question 8

Ben wrote the following examples of changes in substances.

Example A: Vegetables are chopped.

Example B: Food is broken up into simpler form during digestion.

Which statement is correct?

Accepted Answer

Example A describes a physical change and Example B describes a chemical change.

Answer

Example A describes a chemical change and Example B describes a physical change.

Answer

Both are examples of chemical changes.

Answer

Both are examples of physical changes.

Question 9

Identify this atom:

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

None of these.

Question 10

How many protons are in Florine whose atomic number is 9 and atomic mass is 19?

Accepted Answer

9

Answer

10

Answer

19

Answer

28

Question 11

Which of the following is true of groups on the periodic table?

Accepted Answer

Groups are vertical and have similar properties.

Answer

Groups are horizontal and have the same properties

Answer

Groups are vertical and do not have the same properties

Answer

Groups are horizontal and do not have the same properties

Question 12

Which of these are compounds?

Accepted Answer

CH4

Accepted Answer

H2O2

Accepted Answer

N2O

Answer

H2

Answer

He

Question 13

Identify the pictures that contain molecules.

Accepted Answer

Option B is correct

Accepted Answer

Option D is correct

Answer

A.

Answer

C.

Unit 1 Study Guide

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