Biology (Day 6; pH, Acids, and Bases)

Question 1

pH

Answer 1

the measure of the hydrogen ion (H+) concentration in a solution

Question 2

Is hydrogen electronegative or positive?

Answer 2

positive

Question 3

Acid

Answer 3

solution with a higher concentration of hydrogen ions than pure water

Question 4

Base

Answer 4

solution with a lower concentration of hydrogen ions than pure water

Question 5

If a solution is read 7 on the pH scale, what does that reveal about the substance?

Answer 5

it is neutral

Question 6

If a solution is read as a value greater than 7 on the pH scale, what does that reveal about the substance?

Answer 6

it is basic

Question 7

If a solution is read as a value lower than 7 on the pH scale, what does that reveal about the substance?

Answer 7

it is acidic

Question 8

what does it mean for a substance to be a strong acid/base or a weak acid/base

Answer 8

a strong acid/base means that it is closer to fully acidic or basic than the neutral point (e.g. 1.3 or 12.9); a weak acid/base means that it is closer to neutral (e.g. 5.7 or 7.9)