ey/mmcl2003

11 22 33 44 55 66 77 88 99

1010 1111 1212 1313 1414 1515 1616 1717 1818

1919 2020 2121 2222 2323 2424 2525 2626

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