### Structure of Matter Speed Match Review Game

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Drag the squares in the gray area and drop them in the matching squares in the blue area below.
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If you make a mistake, the square will return to its original spot.
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Let's Play Speed Match!

Copper, Sulfur, and Oxygen

Plasma

Near the speed of light

Xenon and Fluorine

X = Gas

Y = Solid

Z = Liquid

Gas, Liquid, Solid

99%

They vibrate back and forth in one place.

Protons and electrons

Less than 1%

a. Decreases

Silver, Nitrogen, and Oxygen

Carbon and Oxygen

B. They move faster

Solid and liquid

Calcium and Chlorine

B. an electron

Protons = positive

Electrons = negative

Neutrons = neutral (no charge)

Temperature (energy) Changes

Heat/Cooling

C. The melting of ice and evaportation of water

Protons and Neutrons

Electrons travel in 3D paths in the electron clouds.

increases

a. protons, neutrons, and electrons

C. is mostly empty space

Silver is a metal that can be melted to form jewelry.  As the silver melts, what happens to the atoms that make up the solid?

1. they move closer together
2. they move faster
3. they move in circles

What are the elements in:

XeF4

What are the elements in:

CaCl2

How is the path of electron on your models different from an actual atom?

How fast do electrons move?

The nucleus accounts for approximately what percentage of the total mass of an atom?

What are the elements in:

2AgNO3

The electron cloud surrounding the nucleus of an atom...

1. contains most of the mass of the atom
2. is enclosed by a solid shell
3. is mostly empty space
 X Y Z Particles move independently of each other Particles vibrate about a fixed point Particles move past one another

When energy is taken away, molecular motion...

1. decrease
2. increases
3. stays the same

Which particles determine an atoms charge?

What are the main particles in the nuclus of an atom?

What kinds of particles make up an atom?

1. protons, neutrons, and electrons
2. elements, compounds, and molecules
3. protons, nuclei, and electrons

What are the elements in:

CO2

In which two phase changes involving water does the motion of water molecules INCREASE?

1. the melting of ice and the condensation of water vapor
2. the freezing of water and the evaporation of water
3. the melting of ice and the evaporation of water

What are the charges of the particles in an atom?

About how much mass is in the electron cloud?

When a substance changes from a solid to liquid to gas, the molecular motion...

List the states of matter in DECREASING molecular motion

What two states of matter do not change volume?

What are the elements in:

CuSO4

Which part of an atom has the least mass?

1. a proton
2. an electron
3. a neutron
4. the nucleus

What is the most common state of matter in the universe?

How do the molecules of a solid move?

What causes matter to change from one state to another?

## You did it!

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## Here are all the answers:

DescriptionMatch:

What kinds of particles make up an atom?

1. protons, neutrons, and electrons
2. elements, compounds, and molecules
3. protons, nuclei, and electrons

a. protons, neutrons, and electrons

Which part of an atom has the least mass?

1. a proton
2. an electron
3. a neutron
4. the nucleus

B. an electron

What are the main particles in the nuclus of an atom?

Protons and Neutrons

The electron cloud surrounding the nucleus of an atom...

1. contains most of the mass of the atom
2. is enclosed by a solid shell
3. is mostly empty space

C. is mostly empty space

What are the charges of the particles in an atom?

Protons = positive

Electrons = negative

Neutrons = neutral (no charge)

How is the path of electron on your models different from an actual atom?

Electrons travel in 3D paths in the electron clouds.

About how much mass is in the electron cloud?

Less than 1%

The nucleus accounts for approximately what percentage of the total mass of an atom?

99%

Which particles determine an atoms charge?

Protons and electrons

How fast do electrons move?

Near the speed of light

How do the molecules of a solid move?

They vibrate back and forth in one place.

When energy is taken away, molecular motion...

1. decrease
2. increases
3. stays the same

a. Decreases

Silver is a metal that can be melted to form jewelry.  As the silver melts, what happens to the atoms that make up the solid?

1. they move closer together
2. they move faster
3. they move in circles

B. They move faster

When a substance changes from a solid to liquid to gas, the molecular motion...

increases

What causes matter to change from one state to another?

Temperature (energy) Changes

Heat/Cooling

List the states of matter in DECREASING molecular motion

Gas, Liquid, Solid

What two states of matter do not change volume?

Solid and liquid

What is the most common state of matter in the universe?

Plasma

In which two phase changes involving water does the motion of water molecules INCREASE?

1. the melting of ice and the condensation of water vapor
2. the freezing of water and the evaporation of water
3. the melting of ice and the evaporation of water

C. The melting of ice and evaportation of water

 X Y Z Particles move independently of each other Particles vibrate about a fixed point Particles move past one another

X = Gas

Y = Solid

Z = Liquid

What are the elements in:

CO2

Carbon and Oxygen

What are the elements in:

XeF4

Xenon and Fluorine

What are the elements in:

CaCl2

Calcium and Chlorine

What are the elements in:

2AgNO3

Silver, Nitrogen, and Oxygen

What are the elements in:

CuSO4

Copper, Sulfur, and Oxygen