Properties of Water

Front

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

Back

The hydrogen end.

Tags

NGSS.MS-PS1-1

Front

What is the term for when water molecules stick easily to other water molecules?

Back

Cohesion.

Front

What percentage of Earth's water is salt water?

Back

97%.

Front

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.

Back

Nonpolar fats and oils.

Front

What are the attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule called?

Back

Hydrogen bonds.

Front

Define cohesion in the context of water properties.

Back

Cohesion is the tendency of water molecules to stick to each other due to hydrogen bonding.

Front

Define adhesion in the context of water properties.

Back

Adhesion is the tendency of water molecules to stick to other substances.

Front

What is the significance of water being a polar molecule?

Back

Water's polarity allows it to dissolve many substances, making it a universal solvent.

Front

Explain why water has a high specific heat capacity.

Back

Water can absorb a lot of heat before its temperature rises significantly, due to hydrogen bonding.

Front

What is surface tension in water?

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane.

Tags

NGSS.MS-PS2-5