Water Property

The water droplets on the outside of this glass of water is showing the following phase change

• melting

• evaporation

• freezing 

• condensation

Tags

NGSS.MS-PS1-4

At what altitude did the boiling point of water never exceed 88 °C, according to the article?

• At sea level

• In the Himalayas, at about 1,200 feet

• In the Himalayas, at about 12,000 feet

• At the top of Mount Everest

Tags

NGSS.MS-PS3-4

What is the reason for water boiling at a lower temperature at high altitudes?

• Because the atmospheric pressure is higher

• Because the water is purer

• Because the atmospheric pressure is lower

• Because of the presence of salt

What happens to the boiling point of water when salt is added?

• It decreases

• It remains the same

• It increases

• It becomes unpredictable

Tags

NGSS.MS-PS1-4

When water freezes in the ocean, the ice floats to the surface. What property explains this phenomenon?

• water expands when it freezes, making ice less dense than water

• water compacts when it freezes, making ice more dense than water

• hydrogen bonds in water push the ice to the surface

• ice is afraid of water, and avoids it

If this is a floating ice sheet, which property of water is this polar bear relying on? 

• Surface Tension

• Cohesion

• Adhesion

• Density

By how much does the boiling point of water increase if you add 20 grams of salt to five litres of water?

• 140.00° C

• 104.00° C

• 100.04° C

• 100.4° C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The higher pressure inside a pressure cooker ​ (a)   the boiling point of water.

• increases

• decreases

Tags

NGSS.MS-PS1-4

What is the point where a liquid changes to gas a gass called

• Melting Point

• Boiling Point

Tags

NGSS.MS-PS1-4

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• floats when frozen 冻结时会漂浮

• Dissolves most substances