Acids and Alkalis

Question 1

what are 2 properties of acids?

Answer 1

PH less than 7
source of H+ ions

Question 2

what are the 2 chemical properties of alkalies?

Answer 2

PH more than 7
source of OH- ions

Question 3

what colour do acids go in universal indicator

Answer 3

red

Question 4

what colour do alkalis go in the universal indicator?

Answer 4

blue

Question 5

what colour do acids go in litmus

Answer 5

red

Question 6

what colour do alkalis go in litmus?

Answer 6

blue

Question 7

what colour do acids go in phenolphthalein

Answer 7

colourless

Question 8

what colour do alkalis go in phenolphthalein

Answer 8

pink

Question 9

what colour do acids go in methyl orange

Answer 9

red

Question 10

what colour do alkalis go in methyl orange

Answer 10

yellow

Question 11

what 2 factors affect the strength of an acid

Answer 11

the concentration
dissociation rate

Question 12

how much more alkaline in a PH 8 to a PH 10

Answer 12

*100

Question 13

what is a base

Answer 13

a substance that reacts with an acid to form a salt and water only

Question 14

give 2 examples of a base

Answer 14

alkali solutions
metal oxides
metal hydroxides

Question 15

base + acid —>

Answer 15

salt + water

Question 16

what is the name and formulae of the acid made with chlorine

Answer 16

Hydrochloric acid
HCL

Question 17

what is the name and formulae of the acid made with nitrate

Answer 17

nitric acid
HNO3

Question 18

what is the name and formulae of the acid made with sulfate

Answer 18

sulfuric acid
H2 SO4

Question 19

metal + acid –>

Answer 19

salt + hydrogen

Question 20

metal carbonate + acid —>

Answer 20

salt + carbon dioxide + water

Question 21

what is the test for hydrogen

Answer 21

lighted splint ignites hydrogen with a pop

Question 22

what is the test for carbon dioxide

Answer 22

turns limewater milky