5.4 Study Guide

Question 1

How does pH affect living things?

Answer 1

If the pH levels of something isn’t neutral, then it pulls apart proteins into different shapes. This means the protein can’t do it’s jobs, which then affects the cells negatively.

Question 2

What is a solvent?

Answer 2

The substance another substance is being dissolved into.

Question 3

What is a solute?

Answer 3

The substance that is being dissolved into another substance.

Question 4

How is are water molecules split into H3O+ and OH-?

Answer 4

Two very polar hydrogen molecules form a hydrogen bond and then split, making Hydronium (H3O+) and Hydroxide (OH-).

Question 5

Why does water have a lot of cohesion and adhesion?

Answer 5

Because water easily forms all sorts of intermolecular bonds (including strong bonds like hydrogen bonds) with other molecules (including other water molecules).

Question 6

What is the difference between acidic substances and basic substances?

Answer 6

Acidic substances have more H3O+ (and a pH of less than 7) while basic substances have more OH- (and a pH of more than 7).

Question 7

What is the pH of a substance with an OH- level of 10^-8

Answer 7

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