Science Ch 11 - matter

How can you separate a saltwater mixture?

• wave a wand

• freeze it

• boil it

• pour it through a strainer

Which best describes matter?

• anything you can observe with your senses

• anything made up of one element

• anything you can eat

• anything that takes up space and has mass

A tossed salad is an example of a

• solution

• good food

• mixture

• chemical change

A scientist describes an object as large, smooth, and green. The scientist is observing the object's ___________.

• properties

• senses

• volume

• density

Why is baking a cake a chemical change?

• The substances that make up the batter can be easily separated.

• The substances that make up the batter are heated.

• The substances that make up the batter change the way they look.

• The substances that make up the batter become a different kind of matter.

What type of matter is made of particles that are tightly packed together and firmly connected?

• gas

• solid

• liquid

• plasma

What are some physical changes that happen when an ice cube is placed in the sun?

• It turns color and is now a soda

• It turns into a liquid and can then evaporate into a gas

• It turns into a solid ice cube again

• It turns into a liquid then forms back into a cube

How is a gas different from a solid or a liquid?

• A gas changes shape over a long period of time.

• A gas has a certain shape that does not change.

• A gas spreads out to fill whatever space is available.

• A gas is a tightly packed shape.

Which of the following is a chemical change?

• frying eggs

• ripping paper

• freezing water

• making lemonade

How is a chemical change different that a physical change?

• A chemical change occurs more slowly that a physical change.

• A physical change happens at a much lower temperature.

• A chemical change produces a new kind of matter.

• A physical change produces a new kind of matter.