Unit 2 Review

How is an atom different than an element?

• An atom can be different elements

• An element needs different atoms to make it up

• An element can be multiple atoms as long as they are the same

• An element is made up of several atoms in a fixed ratio

What is a compound?

• Two or more substances mixed together evenly

• Two or more substances mixed together unevenly

• The same as an isotope

• Two or more different atoms combined in a fixed ratio

Tags

NGSS.MS-PS1-1

__________ is anything that has mass and takes up space.

__________ is a substance with a definite shape and a definite volume.

Tags

NGSS.5-PS1-3

If you can observe a property by itself without a reaction, what kind of property is it?

• Chemical

• Physical

• Both of these

• Neither of these

What kind of property can only be observed when one substance reacts with another?

• Physical

• Chemical

• Neither of these

• Both of these

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What has no definite shape or volume?

• Solid

• Liquid

• Plasma

• Gas

What charge do electrons have?

• Negative

• Positive

• Neutral

• All of the above

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What charge do protons have?

• Negative

• Positive

• Neutral

• All of the above

What charge do neutrons have?

• Negative

• Positive

• Neutral

• All of the above