Properties of Water

Properties of Water

Biology - The Nature of Life

Multiple Choice

What atoms make up water?

• 2 oxygen and 1 hydrogen

• 2 oxygen and 1 nitrogen

• 1 oxygen and 2 hydrogen

• 2 hydrogen and 1 nitrogen

Multiple Choice

The amount of water in the body needs to be kept at a balance - this is called...

• metastasis

• metabolism

• thermostat

• homeostasis

Multiple Choice

About what percent of the body is made up of water?

• 20%

• 50%

• 70%

• 90%

Open Ended

Give two reasons why water is needed in the body.

Open Ended

Give two symptoms of dehydration.

Multiple Choice

After not drinking water for ____ you can die.

• 3 days

• 5 days

• 2 weeks

• 1 month

Multiple Choice

How long can you go without eating food before dying?

• days

• weeks

• months

• years

Multiple Choice

T/F? If you have too much water, your cells can burst.

• True

• False

Open Ended

What are some things that can happen if your brain cells swell because of too much water in the body?

Multiple Choice

This drug can lead to hyper-hydration - too much water in the body.

• cocaine

• morphine

• ecstasy

• aspirin

Multiple Choice

Because water is polar, ____ will form between water molecules.

• ionic bonds

• covalent bonds

• hydrogen bonds

• james bonds

Multiple Choice

The attraction (stickiness) between molecules of the same substance (water and water).

• cohesion

• adhesion

• polarity

Multiple Choice

The attraction (stickiness) between molecules of the different substances (water and glass).

• cohesion

• adhesion

• polarity

Video on Surface tenion:

https://www.youtube.com/watch?v=zMzqiAuOSz0 

Multiple Choice

How much energy does it take to change the temperature of water?

• very little

• a medium amount

• a lot

Open Ended

Why is water's high heat capacity important for life on earth?

Multiple Choice

T/F? Water's polarity is what allows it to dissolve lots of different substances.

• True

• False

Multiple Choice

T/F? Water can easily dissolve non-polar molecules but not other polar molecules

• True

• False

Multiple Choice

When you dissolve sugar in water, the sugar is the...

• solution

• solute

• solvent

Multiple Choice

When you dissolve sugar in water, the water is the...

• solution

• solute

• solvent

Multiple Choice

Water is a great buffer. That means that water

• doesn't change temperature easily

• changes temperature easily

• changes pH easily

• doesn't change pH easily