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ey/mmcl2003
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ey/mmcl2003
Non-metal oxides
answer
1
Which type of oxide dissolves in water to produce acids?
ey/mmcl2003
What is formed when sulphursulphur dioxidedioxide reacts with water in the atmosphere?
Acid rainAcid rainanswer
2
ey/mmcl2003
Metal oxidesMetal oxides
answer
3
Which type of oxide dissolves in water to produce alkalinealkaline solutions?
ey/mmcl2003
Give an example of the damaging effects of acid rainacid rain
Destroys wildlife, damages
buildings/metal structures
answer
4
ey/mmcl2003
Which one of the following will produce an acidicacidic solution when dissolved in
water ?answer
5
NONO22
FeONa2O
ey/mmcl2003
How would you use universal indicator or pH paper to find the pH of a substance ?
Add indicator/pH paper to the substance and the check
colour
answer
6
ey/mmcl2003
Which of the following will produce an alkalinealkaline solution when dissolved in water ?
7
answer
Na2O FeO
NO2
ey/mmcl2003
What is the range of pH values for an acidacid ?
Less than 7Less than 7
8
answer
ey/mmcl2003
Universal indicator was added to a solution and it turned REDRED. What type of solution is it ?
acidic
9
answer
ey/mmcl2003
What is the pH range for an ALKALIALKALI ?
Greater than 7Greater than 7
10
answer
ey/mmcl2003
Universal indicator was added to a solution and it turned blue. What type of
solution is it?
Alkaline
11
answer
ey/mmcl2003
What is the pH number for a neutral substance?
7
12
answer
ey/mmcl2003
Which ionion is common to all acids?
HH++
13
answer
ey/mmcl2003
Universal indicator was added to a solution and it
turned greengreen. What type of solution is it?
neutral
14
answer
ey/mmcl2003
Which ionion is common to all alkalis?
OHOH--
(hydroxide ion)(hydroxide ion)
15
answer
ey/mmcl2003
During electrolysis of an acid hydrogen gas is given off.
What is the test for HYDROGENHYDROGEN gas?
Burns with a pop!
16
answer
ey/mmcl2003
Give an example of a common acidacid
vinegar, fizzy drinks
17
answer
ey/mmcl2003
Give an example of a common alkalialkali.
Toothpaste, bicarbonate of soda
18
answer
ey/mmcl2003
What happens to the pHpH of an acid when diluted with water?
It iinncreases to 7
19
answer
ey/mmcl2003
What happens to the pH of an
ALKALIALKALI when diluted with water ?
It ddeeccrreeaasseses to 7
20
answer
ey/mmcl2003
What happens to the acidityacidity of an acid when diluted with water ?
The acidity
decreases(less acidic)
21
answer
ey/mmcl2003
What happens to the alkalinityalkalinityof an alkali when diluted with water?
It decreases -becomes less alkaline
22
answer
ey/mmcl2003
What happens to the concentration of Hconcentration of H++ ions in an acid when diluted with water?
The concentration
decreases
23
answer
ey/mmcl2003
What happens to the concentration of concentration of OHOH-- ions in an alkali when diluted with
water ?
The concentration
decreases
24
answer
ey/mmcl2003
Calculate the concentrationconcentration of a solution containing 0.5 moles of solute
dissolved in 500 cm3 of water.
C = M/V
0.5/0.5 = 1 moles per litre
25
answer
ey/mmcl2003
Calculate the massmass of NaOH required to make 500cm3 of a 0.2 mol/l solution of
sodium hydroxide?
26
answer
Moles = CxV 0.2 x 0.5 = 0.1 mole1 mole of NaOH 23 + 16 +1 = 400.1 moles = 0.1 x40 = 4g
