Property of Water

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

What property of water causes these tablets to dissolve?

• universal solvent

• expansion Upon Freezing

• cohesive Behavior

• ability to moderate temperature

Blood functions as a transport mechanism to take nutrients and oxygen to all cells in the body. What property of water allows for this to occur?

• Expansion Upon Freezing

• Universal Solvent

• Cohesive Behavior

• Ability to Moderate Temperature

Describe the movement of the water molecules at cold temperatures.

• They join together and move slowly

• They move very fast and erratically (疯狂的)

Tags

NGSS.MS-PS1-4

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

• Surface Tension

• Cohesion

• Adhesion

• Density

Why does ice float?

• 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

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

Describe the movement of the water molecules at hot temperatures.

• They join together and move slowly.

• They move very fast and erratically (疯狂的).

Tags

NGSS.MS-PS1-4

Water has high specific heat. Meaning, it takes _____ time to warm up a large amount of water. 水的比热容高，也就是说，加热水需要的时间长/短

• long

• short

Tags

NGSS.MS-PS3-4

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature （湖水和海洋温度波动不大）. What is the reason for this phenomenon?

• Water is an acid 水是一种酸.

• Water is a versatile solvent 水易挥发.

• Water is able to moderate temperature.