Chemistry - Unit 1: MATTER

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

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

Which of these is an extensive property?

• silver color

• metallic luster (shiny)

• mass of 11.34 grams

• melting point of 327°C

Conductivity is an example of a/an

• chemical property

• intensive property

• extensive property

• dependent property

A cylinder has a density of 9 g/cm³. If the cylinder is cut in half, what would the density of the first half be?

• 4.5 g/cm³

• Density is an intensive property, so it would still be 9 g/cm³.

• 18 g/cm³

• None of these are correct.

Which of these is an intensive property?

• length

• volume

• mass

• boiling point

Properties that remain the same regardless of the amount present are called

• intensive properties

• extensive properties

• chemical properties

• physical changes

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.