Chem Unit 2 Test Review

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

• chemical changes create new substances

• physical changes create new substances

• chemical changes break apart atoms

• physical changes break apart atoms

Tags

NGSS.MS-PS1-5

Mixtures are divided into two classes. What are they?

• compounds and substances

• heterogeneous and compounds

• Homogeneous and heterogeneous

• homogeneous and elements

Another name for a homogenous mixture is a ______________.

• mixture

• solution

• substance

• element

Which of the following are chemical properties?

• solubility

• density

• reactivity

• dissolving

Sand and water is an example of what type of mixture?

• homogeneous

• heterogeneous

• molecule

• substance

Which state of matter has a defined shape and volume?

• Solid

• Liquid

• Gas

Which state of matter takes the shape of its container?

• Solid and Gas

• Solid and Liquid

• Gas and Liquid

Which state of matter is represented by the molecules in this picture?

• Solid

• Liquid

• Gas

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

• chemical changes create new substances

• physical changes create new substances

• chemical changes break apart atoms

• physical changes break apart atoms

Tags

NGSS.MS-PS1-5

Which of the following signs does NOT indicate that a chemical change has happened?

• phase change

• change in color

• foaming or bubbling

• production of heat or light

Tags

NGSS.MS-PS1-2