Properties of Water Test

Question 1

What does the pH scale span from?

Answer 1

0-14

Question 2

Is 0 an acid or a base?

Answer 2

Acid

Question 3

More acidic substances have

Answer 3

more H+ ions

Question 4

More basic substances have

Answer 4

more OH- ions

Question 5

The only neutral substances (PH 5)

Answer 5

Distilled Water

Question 6

One molecule of water contains

Answer 6

2 atoms of hydrogen and 1 atom of oxygen

Question 7

All of water’s unique properties are caused by:

Answer 7

water’s polarity (the uneven distribution of charge on a molecule)

Question 8

Water molecules are held to other molecules by _____ bonds.

Answer 8

hydrogen bonds

Question 9

what is cohesion?

Answer 9

cohesion causes water molecules to stick to each other due to hydrogen bonding

Question 10

what is adhesion?!

Answer 10

adhesion causes water molecules to stick to other materials and surfaces.

Question 11

SURFACE TENSION

Answer 11

cohesion causes water to have surfaces tension, which allows some insects TO WALK ON WATER

Question 12

What is capillary action?

Answer 12

Capillary action allows water to move against gravity and flow upwards (like in plants)

Question 13

Universal Solvent? - what does that mean?

Answer 13

Water can dissolve a wide variety of substances (excluding oil!)- b/c of its polarity and ability to form hydrogen bonds.

Question 14

DENSITY

Answer 14

SOILD WATER IS LESS DENSE THAN LIQUID WATER B/C IT EXPANDS WHEN IT FREEZES- THIS IS DIFFERENT THAN ALMOST EVERY OTHER ELEMENT

Question 15

SPECIFIC HEAT!!!!!!!!

Answer 15

IT TAKES A LOT OF ENERGY TO HEAT UP WATER (WATER HAS A HIGH HEAT CAPACITY)

• WATER HEATS MORE SLOWLY
• IT RETAINS HEAT LONGER
• MAINTAINS TEMP OF ORGANISMS AND THE EARTH