day 13 Properties of water

name first and last

Like most liquids, water contracts (gets smaller) when it freezes.

• True
• False

Tags

NGSS.MS-PS1-4

Water has a high surface tension.

• True
• False

What two elements make up water?

• Helium and Oxygen
• Hydrogen and Oxygen
• Helium and Carbon
• Oxygen and Carbon

Tags

NGSS.MS-PS1-1

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Which is an example of a solvent?

• Salt
• Egg whites
• Water
• Sugar

Why is water considered a polar molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive
• The hydrogen end is slightly negative and the oxygen end is slightly positive
• The hydrogen and oxygen are covalently bonded
• Because it is hydrophobic

Which is NOT a unique property of water?

• Frozen water floats on liquid water.
• Water covers most of the Earth’s surface and retains a large amount of heat.
• Water molecules stick to each other through hydrogen bonds.
• Water cools very rapidly.

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Tags

NGSS.MS-PS1-4

Water is the only substance on Earth that naturally exists in _______________.

• Solid and liquid states
• All three states
• Gaseous form
• Liquid and gas states

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4