M1 Introduction

Question 1

potentiometric hydrogen ion concentration, is an important concept in chemistry that measures the acidity level of a solution.

Answer 1

measurement of ph

Question 2

Pure water has a neutral pH close to

Answer 2

7.0 at 25 degrees celsius

Question 3

Each subsequent number represents a ____ difference to the previous one

Answer 3

tenflold

Question 4

how is pH measured

Answer 4

pH paper or pHmeter

Question 5

pure water is neutral. but natural water is (acidic or basic)

how about distilled water? acidic or basic

rain water

Answer 5

basic

slightly acidic

slightly accidic

Question 6

true or false

if there’s no water, theres no pH like gasoline, pure alcohol or oil

Answer 6

true

Question 7

can lemon or citrus damage tooth enamel?

Answer 7

yes

Question 8

milk is basic or acidic

Answer 8

neutral but becomes acidic overtime

Question 9

urine and saliva what pH

how about human skin, hair, nails

Answer 9

around 6

around 5

Question 10

who proposed calculating for pH

Answer 10

Danish biochemist Soren peter lauritz Sorensen

Question 11

“pH” comes from the German word “_____,” which means “power,”

Answer 11

potenz