acids and bases

Question 1

define acid

Answer 1

acid produces hydrogen ions, H+, when they are dissolved in water

Question 2

define base

Answer 2

metal oxides or metal hydroxide that reacts with acids to produce salt and water

Question 3

define alkali

Answer 3

a soluble base which produces hydroxide ions, OH−, when dissolved in water

Question 4

what are the 3 common acids

Answer 4

hydrochloric acid
nitric acid
sulfuric acid

Question 5

hydrochloric acid formula

Answer 5

HCl

Question 6

nitric acid formula

Answer 6

HNO₃

Question 7

sulfuric acid formula

Answer 7

H₂SO₄

Question 8

what is the chemical name of HNO₃

Answer 8

nitric acid

Question 9

what is the chemical name of HCl

Answer 9

hydrochloric acid

Question 10

what is the chemical name of H₂SO₄

Answer 10

sulfuric acid

Question 11

name the 4 common alkalis

Answer 11

Calcium hydroxide
Ammonium hydroxide
Potassium hydroxide
Sodium hydroxide

Question 12

calcium hydroxide formula

Answer 12

Ca(OH)₂

Question 13

ammonium hydroxide formula

Answer 13

NH₄OH

Question 14

potassium hydroxide formula

Answer 14

KOH

Question 15

sodium hydroxide formula

Answer 15

NaOH

Question 16

what is the chemical name of NH₄OH

Answer 16

ammonium hydroxide

Question 17

what is the chemical name of NaOH

Answer 17

sodium hydroxide

Question 18

what is the chemical name of Ca(OH)₂

Answer 18

calcium hydroxide

Question 19

what is the chemical name of KOH

Answer 19

potassium hydroxide

Question 20

what are the physical properties of acids

Answer 20

taste sour
ph <7
blue litmus paper turns red
conducts electricity in an aqueous state 
corrosive

Question 21

what are the physical properties of alkalis

Answer 21

taste bitter
ph >7
red litmus paper turns blue
conducts electricity in an aqueous state

Question 22

acid + metal —–>

Answer 22

salt + hydrogen

Question 23

acid + base —–>

Answer 23

salt + water

Question 24

acid + carbonate —–>

Answer 24

salt + CO2 + H2O

Question 25

alkali + acid ----->

Answer 25

salt + water

Question 26

alkali + ammonia salt ----->

Answer 26

salt + ammonia + H2O

Question 27

how to test hydrogen if it is present | and its result

Answer 27

put lighted splint into gas | lighted splint will extinguish with a pop sound

Question 28

how to test CO2 if it is present | and its result

Answer 28

bubble gas in limewater | white ppt. is formed

Question 29

how to test ammonia if it is present | and its result

Answer 29

put a moist red litmus paper into gas | moist red litmus paper turns blue

Question 30

why does the ammonia test need a moist red litmus paper

Answer 30

because alkali need to dissolve in water to produce OH

Question 31

basic oxide reacts with...

Answer 31

acid

Question 32

amphoteric oxide reacts with...

Answer 32

acid and base

Question 33

acid oxide reacts with...

Answer 33

base

Question 34

neutral oxide does not react acids with...

Answer 34

acid nor base

Question 35

what are the 3 amphoteric base

Answer 35

Zinc oxide Aluminium oxide Lead (ll) oxide

Question 36

acid oxide consists of how much oxygen

Answer 36

2 or more oxygen

Question 37

neutral oxide consists of how much oxygen

Answer 37

only 1 oxygen

Question 38

what does this symbol mean (g) : (s) : (l) : (aq) :

Answer 38

g) : gas (s) : solid (l) : liquid (aq) : aqueous

Question 39

difference between (l) and (aq)

Answer 39

(l) is melted/ molten | (aq) dissolved subs into water

Question 40

base is also known as...

Answer 40

metal oxide or | metal hydroxide