Atomic Theory

What State of Matter is state A ?

• Liquid

• Solid

• Gas

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

What State of Matter is state B ?

• Liquid

• Solid

• Gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What State of Matter is state C ?

• Liquid

• Solid

• Gas

Tags

NGSS.MS-PS1-4

When metal is heated to a certain temperature, it can be bent and shaped. As the metal cools, it is no longer bendable. As the metal cools, the atoms.....

• Are far apart moving very fast and bouncing off one another

• Are slightly apart and moving at a slower temperature

• Are close together and vibrating

• Are not moving at all.

Tags

NGSS.MS-PS1-4

Which of the following is a good description of how atoms within a liquid are moving?

• Moving fast and very far apart?

• Close together and vibrating

• Not moving at all

• Not spread out very far, and moving slowly

Tags

NGSS.MS-PS1-4

Why is it that when you put an empty plastic bottle in the refrigerator and then come back in an hour, the sides are dented?

• Because the air molecules inside the bottle have cooled down and are now closer together than there were at room temperature.

• Because the air molecules in side the bottle have heated up and are very far apart and moving faster than they were at room temperature

• Because the air molecules have cooled off and are a medium distance from each other and are not moving anymore.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Select all that apply. A pure substance is a sample of matter with both definite and constant composition with distinct chemical properties. A pure substance can be........

• single kind of matter

• multiple types of matter

• an element or compound

• have specific makeup or composition

It is necessary for scientist to use models to study atoms because they are ...

• invisible

• very small

• very large

• very dangerous

Tags

NGSS.MS-PS1-1

Which of the following is the best description of a chemical compound ?

• Two or more solids

• Two or more types of metal

• Two or more types of chemical elements

• Two or more types of pure substances

Soda has a pH of 3 on the pH scale, so it is classified as an

• acid

• base

• neutral