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Do First - pH

Posljednje ažuriranje over 1 year ago

15

Question 1

00:09

1

Question 2

00:15

1

Question 3

00:21

1

Questions 4-6

00:32

1

1

1

Question 7

00:52

1

Question 8

01:06

1

Question 9

01:25

1

Question 10

01:41

1

Question 11

02:00

1

Question 12

02:15

1

Question 13

02:29

1

Question 14

02:44

1

Question 15

02:52

1

Pitanje 1

1.

Pitanje 2

2.

Drugi mogući odgovor:

nitrogen ions

halloid ions

oxygen ions

micro ions

hydrogen ions

Pitanje 3

3.

Pitanje 4

4.

A pH lower than 7 is an...

chronicles of ridick

base (alkaline)

neutral

acid (acidic)

Pitanje 5

5.

A pH higher than 7 is a

chronicles of ridick

base (alkaline)

acid (acidic)

neutral

Pitanje 6

6.

A pH at 7 (in the middle) is a

base (alkaline)

acid (acidic)

neutral

chronicles of ridick

Pitanje 9

9.

Pitanje 10

10.

Pitanje 11

11.

Drugi mogući odgovor:

red

white

black

purple

brown

Pitanje 12

12.

pH is calculated as a...

negative log of a solution's hydrogen ion concentration

neutral log of a solution's hydrogen ion concentration

positive log of a solution's hydrogen ion concentration

Pitanje 13

13.

Pitanje 14

14.

Drugi mogući odgovor:

40 fold

30 fold

100 fold

20 fold

10 fold

Pitanje 15

15.

Water with a pH of 5 is...

10x more acidic than water with a pH of 8

10x more acidic than water with a pH of 7

10x more acidic than water with a pH of 4

10x more acidic than water with a pH of 6

10x more acidic than water with a pH of 5