Properties of Water Review

Refer to the picture; the meniscus is occurring because of:

• Adhesion

• Cohesion

Describe COHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

Tags

NGSS.MS-PS1-1

Attractions between water molecules are called

• Covalent bonds

• Ionic bonds

• Polar bonds

• Hydrogen bonds

Tags

NGSS.MS-ESS2-4

Describe ADHESION.

• Water molecules attracted to other substances.

• Water molecules climbing upwards against the force of gravity.

• Water molecules dissolving many substances because of its polarity.

• Water molecules attracted to other water molecules.

Why does ice float?

• As water freezes, it expands and its density decreases.

• As water freezes, it takes up more hydrogen from the atmosphere

• As water freezes, air becomes trapped between the water molecules.

• As water freezes, it takes up more oxygen from the atmosphere

Tags

NGSS.MS-PS1-4

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

Refer to the picture; the water droplets are sticking to the leaf because of:

• Adhesion

• Cohesion

Which term refers to water having a slightly positive and a slighty negative charge on its ends?

• cohesion

• surface tension

• polar

• adhesion

Tags

NGSS.MS-PS1-1

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

• the oxygen end

• the hydrogen end

• both ends are slightly negative

• neither end is negative