Unit 1 Chemistry

When rain freezes and turns to ice or sleet, this is an example of a

• physical property

• chemical property

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Two substances are combined. Gas is released, and a tall, black column forms. This is an example of a

• physical property

• chemical property

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

Which answer below is an example of two physical properties of matter?

• weight and toxicity

• mass and reactivity

• mass and volume

• mass and pH

When two substances are combined, a milky substance forms and falls to the bottom of the flask. What would be the most likely reason this happened?

• One of the substances dissolved.

• The substances chemically reacted with one another.

• Some of the liquid evaporated.

• One of the substances crystallized.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Conductivity is an example of a/an

• chemical property

• intensive property

• extensive property

• dependent property

To compress means to be squeezed or pressed together. Why is a gas easily compressible, but solids are not?

• Gas particles are much smaller.

• Particles in a solid are not strongly attracted to one another.

• Molecules in a solid are much larger.

• Particles in a gas are much farther apart compared to a solid.

Tags

NGSS.MS-PS2-2

Which state of matter has an indefinite shape and a definite volume?

• liquid

• solid

• gas

• plasma

Tags

NGSS.MS-PS1-4

Which state of matter has an indefinite shape and an indefinite volume?

• liquid

• solid

• gas

• plasma

Which state of matter has a definite shape and a definite volume?

• liquid

• solid

• gas

• plasma

A mixture

• is made of a single substance.

• is made of more than one substance.

• always has a fixed composition.

• is made of substances that you can always see at all times.