Chemistry Water Properties

When a molecule has an opposite electrical charge on each end, it is known as what?

• cohesion

• polar molecule

• hydrogen bond

• solution

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils

• polar sugar molecules

• salt made of a positive sodium ion and a negative chloride ion

• all of the substances will dissolve easily in water

Tags

NGSS.MS-PS1-2

When water molecules stick easily to other water molecules, this is called what?

• cohesion

• adhesion

• solution

• polar molecule

Tags

NGSS.MS-ESS2-4

The fact that water can stick to other substances is called:

• Ph

• Adhesion

• Cohesion

• Insulation

Tags

NGSS.MS-ESS2-4

Large bodies of water, such as lakes and oceans, do not have quick changes in temperature. What is the reason for this?

• Water is an acid.

• Water is a versatile solvent.

• Water has a high heat capacity.

•  Water acts as a buffer.

Tags

NGSS.MS-PS3-3

Water freezes and melts at 0°C. Melting point is what kind of property?

• chemical

• colligative

• extensive

• physical

Tags

NGSS.MS-PS1-4

Consider the picture of the jar holding oil, syrup, and water. It would be easy to pour off the oil to separate from both the syrup and water because the liquids have different

• densities

• masses

• temperatures

• volumes

Tags

NGSS.MS-PS1-2

Dissolving Kool-Aid into water is an example of a 

• physical change              

• chemical change

Which of the following would be evidence that a chemical change has occurred?

• change in size

• change in state

• new substance formed

• change in shape

Tags

NGSS.MS-PS1-2

Which end of the water molecule has a slightly positive charge?

• the oxygen end

• the hydrogen end

• both ends are slightly positive

• neither end is positive