acids and alkaline

Question 1

What are common Lab acids?

Answer 1

Hydrochloric acid
Sulfuric acid
Nitric acid

Question 2

What are common Lab alkalis?

Answer 2

Sodium hydroxide
potassium hydroxide

Question 3

What pH do alkali solutions give?

Answer 3

greater than pH 7

Question 4

What pH do acid solutions give?

Answer 4

less than pH 7

Question 5

What colour does universal indicator turn in the presence of strong acid?

Answer 5

It turns from green to red

Question 6

What colour does universal indicator turn in the presence of weak acid?

Answer 6

It turns from green to yellow

Question 7

What colour does universal indicator turn in the presence of weak alkali?

Answer 7

It turns from green to turquoise

Question 8

What colour does universal indicator turn in the presence of strong alkali?

Answer 8

It turns from green to purple/blue

Question 9

A solution which is neither acid or alkali it is called

Answer 9

neutral

Question 10

What colour is a neutral solution using universal indicator?

Answer 10

Green

Question 11

Acids all contain

Answer 11

hydrogen

Question 12

Alkalis all contain

Answer 12

hydroxide

Question 13

acid + alkali –>

Answer 13

Salt + water

Question 14

metal carbonate + acid –>

Answer 14

salt + water + carbon dioxide

Question 15

metal oxide + acid –>

Answer 15

salt + water

Question 16

What is the test for carbon dioxide?

Answer 16

turns limewater cloudy

Question 17

metal hydroxide + acid –>

Answer 17

salt + water

Question 18

An acid and alkali is an example of a

Answer 18

neutralisation reaction

Question 19

Lithium hydroxide + nitric acid –>

Answer 19

Lithium nitrate + water

Question 20

copper carbonate + nitric acid –>

Answer 20

copper nitrate + water + carbon dioxide

Question 21

copper carbonate + sulfuric acid –>

Answer 21

copper sulfate + water + carbon dioxide

Question 22

when an acid or alkali undergo neutralisation reactions their pH moves to

Answer 22

7 neutral solution

Question 23

Everyday uses of acids

Answer 23

food flavourings (vinegar) & cleaning products

Question 24

Everyday uses of alkalis

Answer 24

Cleaning products

Question 25

sulfuric acid chemical name is

Answer 25

hydrogen sulfate

Question 26

hydrochloric acid chemical name is

Answer 26

hydrogen chloride

Question 27

Nitric acid chemical name is

Answer 27

hydrogen nitrate

Question 28

what happens to the alkaline when you go down the periodic table

Answer 28

the reactivity of metals increase

Question 29

how to produce sulphuric dioxide and carbon dioxide

Answer 29

burn sulphuric acid with a bunsen burner

Question 30

making nitrogen dioxide from spark

Answer 30

high energy from spark causes nitrogen oxygen to combine

Question 31

non metal oxides which are acidic

Answer 31

sulfur dioxide nitrogen dioxide carbon dioxide

Question 32

pH scale of acids and alkalines when diluted

Answer 32

acids increase on the pH scale alkaline decrease

Question 33

how to use universal indicator

Answer 33

add few drops of indicator into solution observe colour change compare on pH scale

Question 34

red cabbage indicator

Answer 34

boil cabbage