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Water, air, buildings, food, and everything visible and invisible has mass and takes up space. What is the word used to describe anything that has mass and takes up space?

• atom

• molecule

• solid

• matter

A pure substance is a single kind of matter. A(n) ____________ is made up of two or more substances that are together in the same place, but each substance keeps its own properties.

• mixture

• compound

• atom

• molecule

Which property would help to determine whether matter is a solid or a liquid?

• volume

• color

• shape

• mass

The difference between a physical change and a chemical change is that a chemical change makes a new substance. For example, when water freezes, it goes through a physical change, but it does not change into a different substance. Choose the three items that describe physical changes.

• rusting metal

• boiling water

• breaking ice

• carving a wooden statue

• baking a cake

Which term can be used to describe this model?

• A molecule because it contains more than one atoms that are held by chemical bonds

• An element because it is a unique substance

• A compound because it contains more than one type of element that are chemically combined in a set ratio

• A mixture because it contain more than one atom that are physically combined

What is the chemical formula for this model?

• N₃H

• NH₃

• 3NH

• HN₃

Suppose you find a website that describes the rusting of a nail as a change to only the physical properties of iron, would that be accurate?

• No, because it is still nail that is made of iron

• Yes, because no new substance was formed

• Yes, because the rust is not a new substance.

• No, because a new substance called rust is formed and that is a change in chemical property

Examples of a homogenous and a heterogenous mixutre are

• Homogenous: mix nuts

  Heterogenous: mushroom soup

• Homogenous: sugar solution

  Heterogenous: fruit salad

• Homogenous: mixed vegetables

  Heterogenous: bread dough

• Homogenous: cup of coffee

  Heterogenous: fruit juice

One of these is NOT an example of physical properties of matter

• Mass

• Volume

• Flammability

• Density

One of these is NOT an example of chemical properties of matter

• Able to react

• Able to burn

• Able to melt

• Able to rust