CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

11
CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis

Transcript of CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Page 1: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

CHEMISTRY DEPARTMENT

WAID ACADEMY

Unit 1

Acids and Alkalis

Page 2: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Acid solutions have a pH value of

1. Between 5 and 9.

2. Equal to 7.

3. Less than 7.

4. More than 7

Bet

wee

n 5 a

nd 9.

Equal

to 7

.

Les

s th

an 7

.

More

than

7

0% 0%0%0%

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Page 3: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Pure water has a pH value of

3 6 7 9

0% 0%0%0%

1. 3

2. 6

3. 7

4. 9

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Page 4: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Which of the following pH values shows the most alkaline solution?

1 6 9 14

0% 0%0%0%

1. 1

2. 6

3. 9

4. 14

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Page 5: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

The pH scale goes from

Bel

ow 0

to a

bove

14

0 to

10

1 to

13

5 to

12

0% 0%0%0%

1. Below 0 to above 14

2. 0 to 10

3. 1 to 13

4. 5 to 12

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Page 6: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

In which line are all three substances acidic?

vin

egar

, bak

ing s

oda...

lim

e wat

er, C

oke a

nd...

ble

ach, b

akin

g so

da a.

.

vin

egar

, Cok

e an

d l...

0% 0%0%0%

1. vinegar, baking soda and oven cleaner

2. lime water, Coke and lemonade

3. bleach, baking soda and limewater

4. vinegar, Coke and lemonade

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Page 7: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

In which line are all three substances alkaline?

1. vinegar, baking soda and sodium hydroxide

2. sodium hydroxide baking soda and limewater

3. lime water, Coke and lemonade

4. lime water, Coke and ammonia solution

vin

egar

, bak

ing s

oda...

sodiu

m h

ydro

xide

ba...

lim

e wat

er, C

oke a

nd...

lim

e wat

er, C

oke a

n...

0% 0%0%0%

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Page 8: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Which is a true statement about what happens when water is added to an acid solution?

The

pH rise

s an

d the.

..

The

pH dec

reas

es a

n...

The

pH rise

s an

d the

...

The

pH dec

reas

es a

n...

0% 0%0%0%

1. The pH rises and the acidity decreases.

2. The pH decreases and the acidity decreases.

3. The pH rises and the acidity increases

4. The pH decreases and the acidity increases

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Page 9: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

The salt formed when nitric acid is neutralised using potassium hydroxide is

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Pota

ssiu

m c

hlorid

e

Pota

ssiu

m n

itrat

e

Sodiu

m n

itrat

e

Pota

ssiu

m s

ulpha

te

0% 0%0%0%

1. Potassium chloride

2. Potassium nitrate

3. Sodium nitrate

4. Potassium sulphate

Page 10: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Which line shows the products of the reaction between an acid and a metal carbonate?

1. A salt and water

2. Water and carbon dioxide

3. A salt and hydrogen.

4. A salt, water and carbon dioxide

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A s

alt a

nd wat

er

Wat

er a

nd car

bon di..

.

A s

alt a

nd hyd

roge

n.

A s

alt,

water

and

car..

.

0% 0%0%0%

Page 11: CHEMISTRY DEPARTMENT WAID ACADEMY Unit 1 Acids and Alkalis.

Which line shows the two gases mostly responsible for causing acid rain?

20

Car

bon dio

xide

and ..

.

Sulp

hur dio

xide

and ..

.

Sulp

hur dio

xide

and n

...

Nitr

ogen d

ioxi

de an

d...

0% 0%0%0%

1. Carbon dioxide and oxygen

2. Sulphur dioxide and carbon dioxide

3. Sulphur dioxide and nitrogen dioxide

4. Nitrogen dioxide and carbon dioxide