Acids and BAses and pH and living things

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created 8 years ago by chemistry_goo
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1

for acid the pH scale goes from

0-6.99

2

an acid is

any compound that form H+ ions in it

3

what makes an acid an acid

H+>OH-

4

the closer to 0 on the pH scale means what

it is more acidic

5

What are some acids,

(stomach acid, lemon juice)

6

for bases the pH scale ranges from

7.01-14

7

a base is

any compound that forms OH- ions in it

8

what makes a base a base

OH-ions>H+ions

9

The closer to 14 on the pH scale means what

it is more basic

10

Examples of bases

(Lye, bleach, oven cleaner)

11

pH values in living cells are usually kept at

6.5 and 7.5

12

6.5 and 7.5 on the pH scale is

the optimal pH for chemical reactions to occur

13

Any switch in pH in a living cell that dips below 6.5 or rises over 7.5 could cause

fatal or serious problems.

14

What is a buffer

a weak acid or base that can react with a strong acid or base

15

what are buffers used for

regulating pH and preventing sharp sudden changes in pH

16

What is in your blood keeping it between 6.5 and 7.5

natural buffers