Describing Matter

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

Tags

NGSS.MS-PS1-1

What is the chemical formula for this model?

• N₃H

• NH₃

• 3NH

• HN₃

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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