05. Matter Changes and Properties

What type of change is dissolving?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

What type of property is density?

• Physical

• Chemical

How are physical and chemical properties different?

• Chemical properties only apply to chemicals.

• Chemical properties describe an ability to react.

• Chemical properties are easy to reverse.

• Physical properties describe becoming new substances.

Silver that is exposed to air turns a dark gray color. This is an example of a _ change.

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Two liquids don’t mix with each other. Which statement is true?

• Sample A has the least density

• Sample A has greater density

• The densities are the same

• Sample B has the greater density

Tags

NGSS.MS-PS1-2

What is the density of an object with a volume of 10 ml and a mass of 40 g?

• 4 g/ml

• 400 g/ml

• 0.25 g/ml

• 50 g/ml

The diagram shows a liquid evaporating into a gas. Which is true about the diagram?

• The change in state of matter is a chemical change.

• The particles are compressing, which is a physical change.

• A change in the state of matter is a physical change.

• Since evaporating occurs at the surface, it cannot be reversed. It is a chemical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following describes an element?

• Only one type of atom

• 2 or more elements bonded together

• A homogeneous mixture

• A heterogeneous mixture

When a substance dissolves in another, what is happening?

• it separates into elements

• it bonds to form something new

• it hides between the other particles

• it disappears

Which is true about solutions?

• solutes dissolve in solvents

• solvents dissolve in solutes

• solutes do the dissolving

• solvents are dissolved