Chemistry Test Review Part 3

When dew (water droplets) forms on the grass overnight, which phase change is being observed?

• melting

• condensation

• freezing

• evaporation

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Which will most likely happen to a solid substance that is heated?

• It will boil.

• It will harden.

• It will melt.

• It will evaporate.

Tags

NGSS.MS-PS1-4

Fish can live in lakes that are frozen because liquid water remains below the ice at the surface. Which of these describes a property of water that allows some liquid water to remain in frozen lakes?

•  

  Water is less dense as a solid than as a liquid.

•  

  Water has a Mohs hardness of about 2 when it is frozen.

•  

  Water can dissolve many different substances.

•  

  Water holds less air at higher temperature.

Tags

NGSS.MS-ESS2-4

This chart gives the physical properties of copper. How does the density of a 4g sample of copper compare to that of a 12g sample of copper?

•  

  Its density is three times the density of the 12g sample.

•  

  Its density is twice the density of the 12g sample.

•  

  Its density is the same density of the 12g sample.

•  

  Its density is half the density of the 12g sample.

Tags

NGSS.MS-PS1-2

Materials made of the same substance will have characteristics in common.

Which property is most likely to remain constant in different samples of the same material?

• weight

•  

  melting point

• volume

• shape

Water and oil don't mix. We would describe this as ___________.

•  

  water and oil are saturated

•  

  water has a low density

•  

  water and oil have low solubilities

•  

  water and oil are insoluble

A student is pouring equal amounts of water, maple syrup, and vegetable oil into a glass beaker and looking at how the layers settle. Which property of the liquids is the student most likely comparing?

• mass

• density

• temperature

• volume

A student has two solid samples of the same substance.

Which property do the substances most likely have in common?

• volume

• mass

• shape

• density