Water review

What is not soluble in water?

• cholesterol

• sodium chloride

• glucose

• amino acids

What is unusual about water in its solid form?

• It is less dense than the liquid form

• It loses its cohesive properties

• It is more dense than the liquid form

• Hydrogen bonds do not exist between molecules

Will water dissolve the molecule depicted?

• no, it is a hydrocarbon

• no, it is type of fat

• yes, it has a charge

• yes, it has polar bonds

Why is having water in sweat so important?

• Its volatility

• its evaporative cooling effect

• it is transparent

• it is cohesive

The amount of energy that must be added to transform a liquid into a gas.

• Evaporative cooling

• Density

• Heat capacity

• Heat of vaporization

What is polarity?

• even distribution of electrons in a covalent bond

• parts of molecule have slight positive and negative charges

• the molecule is neutral

• the molecule is ionic

Due to ______ water is able to stay on a penny.

choose all that apply

• hydrogen bonding

• polarity of water

• cohesion

• adhesion

Why do dogs pant on hot days?

• nobody knows. It is a mystery.

• evaporation of water cools the body

• forming hydrogen bonds cools the body

• evaporation of water heats the body

What is the chemical formula of water?

• H₂O

• HO₂

• H₂O₂

• HO

What is the intermolecular bond formed between water molecules?

• polar bonding

• ionic bonding

• covalent bonding

• hydrogen bonding