2.5 Study Guide

Question 1

Why is water important?

Answer 1

All life occurs in water

Question 2

What is cohesion?

Answer 2

Attraction with water to water.

Question 3

What is adhesion?

Answer 3

hydrogen bonding that happens between water and other substances.

Question 4

What makes water a good solvent?

Answer 4

Polarity

Question 5

What is more dense, liquid water or ice?

Answer 5

Liquid water

Question 6

What does it mean when said that water has a high specific heat?

Answer 6

Water takes a lot of energy to heat up.

Question 7

Does water take a lot of energy to evaporate?

Answer 7

yes

Question 8

List the states of matter for water from most dense to least dense.

Answer 8

Liquid, solid, gas

Question 9

How are ionic substances different from covalent substances?

Answer 9

Ionic break completely apart while covalent molecules stay together

Question 10

What does more concentrated mean?

Answer 10

More concentrated equals more solute per volume

Question 11

What does ph measure?

Answer 11

[H30+] on a logarithmic scale.

Question 12

The ph scale is in powers of what?

Answer 12

10

Question 13

What does ph and poh add up to?

Answer 13

14

Question 14

Base ph is larger than what?

Answer 14

7

Question 15

What is a buffer?

Answer 15

regulates ph (adds or absorbs H+)