Review

States of Matter Qualities

100

What are the three states of matter? 

Solid, Liquid, and Gas

200

These two states of matter expand a little when heated.

Solid and liquid

300

Describe and compare the arraignment of particles and ability to move for each state of matter.

Solids are considered tightly packed, rigid, and fixed in place. They may vibrate a little. 

Liquids are close together, but have the ability to slide past one another. 

Gas particles are far apart and are in constant random motion.

400

Describe the volume and shape for each state of matter.

Gas has indefinite (or not exact) volume and shape, it depends on the container or whatever it is placed in. 

Liquids have a constant volume, no matter the container they are placed in. However, the shape of a liquid does depend on the container they are placed in. 

Solids have both definite shape and volume. 

500

Draw a visual showcasing any properties of the liquids EXCEPT for how they arranged.

Answers may vary -- will evaluate and provide examples.

You could showcase the following qualities: 

- Liquids can flow.

- Liquid particles can slide past one another.

- Liquids can expand slightly when heated.

etc.

Distinguishing matter

100

To distinguish different samples of matter, we would use ____ properties, more specifically, those of which that are considered intensive properties.

physical

200

Name at least 3 examples of physical properties.

Examples can include: mass, volume, temperature, hardness, luster, density, color, etc.

300

Explain why mass cannot be used as a property to identify a sample of matter.

Two different substances can have the same amount of substance but are still made of different materials. Therefore, we cannot use mass to distinguish between samples of matter.

For example, I could have a cup of water filled to the brim. However, I could take out half of that cup and I would still have water despite there being a smaller mass of that substance.

400

Using the data chart above 63-66,

Which colorless substance is a gas at 60 degrees Celsius?

Neon

500

Using the data chart above 63-66,

a) Which substance is a solid at 7 degrees Celsius?

b) As the temperature rises, which solid will melt before mercury boils?

a) Sulfur

b) 

Chemical or Physical?

100

What is the main difference between a physical and chemical change?

We get a new substance from a chemical change, but in a physical change, the substance is made up of the same thing.

200

What are the 4 signs of a chemical change?

We need to see any sign of a chemical change which include: 

- formation of a precipitate

- formation of gas bubbles

- evolution of gas bubbles

- transfer of energy (for example, transfer of heat -- becoming cooler/warmer)

300

How many signs do you need to see in order to judge if a reaction has occurred? 

At least one.

400

In the following description, indicate whether a chemical or physical change occurred and the evidence to state that. 

In baking biscuits and other quick breads, the baking powder reacts to release carbon dioxide bubbles. The carbon dioxide bubbles cause the dough to rise.

A chemical change occurred because:

- A new substance CO2 was formed

- Gas bubbles were produced

- The word "reacts" was used to indicate that a reaction occurred. 

500

In the following description, indicate whether a chemical or physical change occurred and the evidence to state that. 

In a fireworks show, the fireworks explode giving off heat and light.

Chemical change occurred because: 

- Color change

- New gases are produced (smoke)

- Heat is given off (transfer of energy)