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Worksheets

Foundation

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

Which is an example of homogenous solution?

a)

Water

b)

Air

c)

Salt water

d)

Sandy water

2.

A solution is said to be _____when NO more solute will dissolve in it.

a)

Unsaturated

b)

Suspended

c)

Saturated

d)

Diluted

3.

Which one of the following techniques would best be used to separate oil and water?

a)

Chromatography

b)

Decanting

c)

Filtration

d)

Fractional distillation

4.

Which method is used to separate sand from water?

a)

Magnetic

b)

Chromatography

c)

Filtering

d)

Evaporation

5.

Which is an example of a mixture?

a)

CO2

b)

Nitrogen gas

c)

Water

d)

Orange juice

6.

Which one of the following would you use to separate iron filings from sand?

a)

Hot plate

b)

Condenser

c)

Filter paper

d)

Bar magnet

7.

Which method will increase the speed of dissolving salt in the water?

a)

Stirring

b)

Cooling

c)

Lower the pressure

d)

Using bigger salt particles

8.

Which one is the correct formula for Ammonium Nitrate?

a)

NH4Cl

b)

NH4NO3

c)

 NH3CO3

d)

(NH3)2SO4

9.

Refer to image of the Chromatogram in figure 1. The black contains the combination of inks:

a)

Blue, red, and yellow ink

b)

Blue and yellow ink

c)

Blue, red, yellow and green ink

d)

Black ink only

10.

Which ionic compound below is insoluble with water?

a)

CaCO3

b)

K2SO4

c)

BaCl2

d)

ZnI2

11.

Which of the below salt is soluble with water?

a)

PbI2

b)

Ca(NO3)2

c)

BaSO4

d)

Cu(OH)2

12.

Which below cation is soluble together with all anions?

a)

K+

b)

Ag+

c)

 Cu2+

d)

Al3+

13.

The process in which sugar is disappeared into the water is_________?

a)

To evaporate

b)

 To condense

c)

To freeze

d)

To dissolve

14.

If the acid ends in "-ic", the anion has to end in______?

a)

-ite

b)

-ate

c)

–ide

d)

-ic

15.

Which below anion does Zn2+ combined to form an insoluble compound

a)

Cl-

b)

CHCOO-

c)

OH-

d)

SO42-

16.

What is the concentration of the following solutions? 40g of KCl in 250ml of solution.

a)

10

b)

160

c)

100

d)

1000

17.

Is milk an acid or a base?

a)

Acid

b)

Base

c)

Neutral

d)

None of above

18.

Which is a characteristic of an acid?

a)

Turn litmus paper red

b)

Feels slippery

c)

Tastes bitter

d)

Found mostly in detergent

19.

How many grams of hydrochloric acid are present in 5.0 L of a 0.08 g/L solution?

a)

1.6

b)

0.4

c)

40

d)

400

20.

How many grams of KClO3 will dissolve in a 100g of water at 50°C?

a)

20

b)

50

c)

80

d)

100

21.

Which of these salts is the LEAST soluble at 10ºC?

a)

Ce2(SO4)3

b)

NH4Cl

c)

KCl

d)

KClO3

22.

Which solute is the MOST soluble at 20 ºC?

a)

NaNO3

b)

NH4Cl

c)

KI

d)

KClO3

23.

What color does litmus paper turn in the presence of a base?

a)

No color

b)

Blue

c)

Pink

d)

Red

24.

To what volume should 8.0g of KCl be used to prepare a 2.5g/L of solution?

a)

16L

b)

20L

c)

3.2L

d)

64L

25.

Solute has a mass of 80 grams, solvent has 50g. What is the mass of solution?

a)

75g

b)

50g

c)

25g

d)

130g

26.

Which is the best way for the separating particles with different sizes?

a)

Distillation

b)

Decanting

c)

Sieving

d)

Magnetic

27.

What is the name of HCl?

a)

Hydrochloric acid

b)

Hypochlorous acid

c)

Chloric acid

d)

Chlorous acid

28.

Blood is a very weak base. What might its pH value be?

a)

6.5

b)

7.8

c)

4.2

d)

12.2

29.

Hydrocarbons are compounds that contain

a)

Carbon, only

b)

Carbon and hydrogen, only

c)

Carbon, hydrogen, and oxygen, only

d)

Carbon, hydrogen, oxygen, and nitrogen, only

30.

Which element is present in all organic compounds?

a)

Nitrogen

b)

Carbon

c)

Oxygen

d)

Sulfur

31.

Which compound is a saturated hydrocarbon?

a)

Butanol

b)

Butene

c)

Butane

d)

Butyne

32.

Which formula represents an unsaturated hydrocarbon?

a)

C3H6

b)

C₄H₁0

c)

C₃H₈

d)

C₅H₁₂

33.

Which formula represents a hydrocarbon?

a)

CH₃Cl

b)

CH₃CH₃

c)

CH₃NH₂

d)

CH₃COOH

34.

What is the chemical name of this compound?

a)

ethene

b)

Pentyle

c)

Pentene

d)

Pentane

35.

Which compounds belong to the same homologous series?

a)

CH2=CH2 and CH3CH2CH3

b)

CH3COOH and CH3CH2OH

c)

CH4 and CH3CH3

d)

CH3CH=CH2 and CH3COOH

36.

A carboxyl(-COOH) is found in a molecule of

a)

Butane

b)

Butene

c)

Butanoic acid

d)

Butyne

37.

What formula can represent the compound:

a)

C3H6O2

b)

C4H10O

c)

C5H3O

d)

C2H8O

38.

An alkyne with molecular formula C5H8 that contains a functional group of

a)

C=C

b)

C≡C

c)

-OH

d)

-COOH

39.

What is the general formula of alkenes?

a)

CnH2n+2

b)

CnH2n

c)

CnH2n-2

d)

CnH2n+1

40.

Nature of organic compounds is

a)

Ionic

b)

Amphoteric

c)

Covalent

d)

Metallic

41.

Big pH value means stronger base.

a)

TRUE

b)

FALSE

42.

Filtration method could separate liquid from liquid.

a)

TRUE

b)

FALSE

43.

Water and oil can be separated through decantation.

a)

TRUE

b)

FALSE

44.

All acids have lower pH values compare to bases.

a)

TRUE

b)

FALSE

45.

Alcohol is immiscible in water.

a)

TRUE

b)

FALSE

46.

The formula for sulfuric acid is H2SO4.

a)

TRUE

b)

FALSE

47.

Distillation is used to isolate a component of a mixture basing on its boiling points.

a)

TRUE

b)

FALSE

48.

Increasing the particle size of the solute could make dissolving process faster.

a)

TRUE

b)

FALSE

49.

Weak acid will just partially ionized into water.

a)

TRUE

b)

FALSE

50.

Most ammonium compounds are soluble in water.

a)

TRUE

b)

FALSE

51.

Alkene is a hydrocarbon with no double bonds.

a)

TRUE

b)

FALSE

52.

Fractional distillation is the process used to separate the fractions of crude oil.

a)

TRUE

b)

FALSE

53.

Functional group is largely responsible for a molecule’s chemical properties.

a)

TRUE

b)

FALSE

54.

Alkane are a series of hydrocarbons that contain at least one triple carbon-carbon bond.

a)

TRUE

b)

FALSE

55.

A hydrocarbon contains only Hydrogen, Carbon and Oxygen.

a)

TRUE

b)

FALSE

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