ChemComm: Water, Exploring Solutions Review

The property of a substance to allow it to float on water.

• It is heavier

• It is less dense

• It is lighter

• It is more dense

You pour 3 solutions in a cylinder. The density of each is: A-1.87 g/mL, B- 0.98 g/mL, C- 1.01. How will they appear in the cylinder from top to bottom?

• A, B, C

• C, B, A

• B, C, A

• A, C, B

Why does oil not mix with water?

• Oil is more dense

• Oil is polar

• Oil is nonpolar

• Water is nonpolar

Substances that cannot be separated into simpler substances are:

• elements

• mixtures

• compounds

• solutions

Pure substances composed of two or more different elements joined by chemical bonds

• elements

• compounds

• mixtures

• solutions

Solutions that appear to be same throughout are called:

• pure

• homogeneous mixtures

• heterogeneous mixtures

• compounds

Distillation of water requires that you know:

• the boiling point of water

• the density of water

• the freezing point of water

• the mass of the water

The greatest single use of water in the southern United States is:

• Irrigation

• Thermoelectric

• Nuclear

• Aquaculture

Tags

NGSS.MS-ESS2-4

Which state has the highest water consumption?

• Texas

• New York

• California

• Florida

Which reason would explain for the high water use along the upper Texas Gulf coast?

• many people live there

• many chemical/petrochemical companies located there

• water storage for use during a hurricane

• increased irrigation because of rice and sugar farming

Tags

NGSS.MS-ESS3-4