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Science 6

Total questions: 93

Worksheet time: 3615secs

Name
Class
Date
1.
a)
Element
b)
Compound
c)
Mixture
2.
a)
Element
b)
Compound
c)
Mixture
3.
a)
Element
b)
Compound
c)
Mixture
4.
a)
Element
b)
Compound
c)
Mixture
5.

A(n) ______________ is formed when two or more elements chemically combine.

a)

Compound

b)

Element

c)

Mixture

6.

A ___________ is a combination of many different elements not chemically combined.

a)

Element

b)

Compound

c)

Mixture

7.
Which of these is a pure substance?
a)
bread
b)
table salt
c)
garden soil
d)
sea water
8.

Matter is anything that occupy space and has mass. It can be classify into two(2), what are those classification?

a)

Homogeneous and Heterogeneous

b)

Elements and Compounds

c)

Pure substances and Mixtures

d)

Solute and Solvent

9.

Nitrogen (N), Oxygen (O), Carbon (C) and Hydrogen are the most common example of ?

a)

Molecules

b)

Elements

c)

Compounds

d)

Substances

10.

It is a form of matter which mean it has a one

type of atom or molecule.

a)

Substance

b)

Element

c)

Compound

d)

Mixtures

11.

It is a combination of two or more substances.

a)

Substances

b)

Mixtures

c)

Elements

d)

Compound

12.

It is a mixture with a non-uniform composition.

a)

Homogeneous mixture

b)

Solvation process

c)

Heterogeneous mixture

d)

Solubility

13.

In a solution this is the dissolving substance.

a)

Powder

b)

Solute

c)

Liquid

d)

Gas

14.

This is a mixture of two or more substances in which one or more of these substances (solutes) is dissolved in another substance.

a)

Compound

b)

Element

c)

Heterogeneous mixture

d)

Homogeneous mixture

15.

Why is water known as universal solvent?

a)

It is found anywhere.

b)

It gives life to living things.

c)

It covers the greater part of the earth.

d)

It dissolves almost all the substances on Earth.

16.

Is water a element or compound?

a)

Element

b)

Compound

17.

It is a combination of two or more substances in

which the composition is uniform throughout the

mixture.

a)

Heterogeneous mixture

b)

Homogeneous mixture

c)

Solvation

d)

Solution

18.

Water is made up of hydrogen and oxygen, two elements that were chemically combined. This makes water a(n)

a)

atom

b)

compound

c)

element

d)

mixture

19.

__ is a pure substance containing two or more kinds of atoms.

a)

Element

b)

compound

c)

mixture

d)

solution

20.

Which of the following are both solutions?

a)

Water and chicken noodle soup

b)

Baking powder and cornstarch

c)

milk and household bleach

d)

lemonade and soda pop

21.

One group is typically described as containing materials that are exvellent conductors of electricity, ductile and lustrous. Which of the following groups can be classified by thess characteristics?

a)

metals

b)

nonmetals

c)

elements

d)

compounds

22.

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

a)

pure substance

b)

mixture

c)

solution

d)

compound

23.

How many atoms are present in one molecule of glucose, C6H12O6

a)

3

b)

12

c)

24

d)

4

24.

Which of the following is a heterogenous mixture?

a)

neon

b)

soil

c)

steel

d)

salt water

25.

Which of the following is a homogeneous mixture?

a)

sand in a bottle

b)

lemonade

c)

Mercury

d)

salad

26.

A __ mixture is a mixture in which the composition is not uniform throughout the mixture.

a)

element

b)

homogenous

c)

heterogenous

d)

compound

27.

Which of the diagrams below represent a mixture?

a)

A

b)

B

c)

C

d)

D

28.

How many different types of atoms are there in the following molecule?

a)

7

b)

6

c)

3

d)

8

29.

An element consists of how many types of atoms?

a)

None

b)

1

c)

More than 2

d)

It depends on the element

30.

An example of an element on the periodic table is

a)

Water

b)

CO2

c)

Carbon

d)

NaCl

31.

Mixtures can contain which of the following?

a)

Elements

b)

Compounds

c)

Both elements and compounds

32.

In a homogenous mixture

a)

The mixture looks different throughout

b)

The mixture looks the same throughout

c)

The mixture separates

d)

The mixture breaks apart

33.

In a heterogenous mixture

a)

The mixture looks different throughout

b)

The mixture looks the same throughout

c)

The mixture separates

d)

The mixture breaks apart

34.

Which type of mixture involves a solute dissolving in a solvent?

a)

Solution

b)

Colloid

c)

Suspension

d)

Compound

35.

Which type of mixture is heterogenous in nature?

a)

Solution

b)

Suspension

c)

Colloid

d)

Compound

36.

In a ______________, one substance is dissolved in another substance.

a)

solution

b)

suspension

c)

colloid

37.

Which one is not a colloid

a)

Foam

b)

Gel

c)

Emulsion

d)

Coffee

38.
If a spoonful of sugar is mixed in a glass of water, what is the water called? 
a)
solute
b)
solution
c)
solvent
d)
element 
39.

Which of the following appear to be clear (are not cloudy)?

a)

Solution

b)

Suspension

c)

Colloid

40.

A combination of two or more substances that can be physically separated is called a...

a)

Mixture

b)

Pure substance

c)

Compound

41.
Sand floating in water, but most of the sand is settled at the bottom this an example of which type of mixture?
a)
A solution
b)
A colloid
c)
A suspension
d)
A compound
42.
The most commonly used solvent in food is ___
a)
sodium chloride
b)
vinegar
c)
water 
d)
citric acid
43.

Milk and gelatin are examples of __________________.

a)

suspensions

b)

colloids

c)

solutions

44.

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

a)

heterogeneous

b)

homogeneous

c)

pure

45.

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

a)

heterogeneous

b)

homogeneous

c)

pure

46.
Italian dressing is a
a)
solution
b)
suspension
c)
colloid
47.

Sugar water let's light pass through, and is a homogeneous mixture; it is a / an

a)

solution

b)

suspension

c)

colloid

48.

A snow globe is an example of a/an

a)

solution

b)

suspension

c)

colloid

d)

alloy

49.

The part of the solution that is being dissolved

a)

solute

b)

solvent

c)

solubility

d)

miscible

50.

Which one does NOT scatter light?

a)

solution

b)

colloid

c)

suspension

51.

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

a)

mixture

b)

pure substance

c)

compound

d)

element

52.

A ______________ mixture is one that does not have a uniform composition.

a)

heterogeneous

b)

homogenous

c)

pure substance

53.

This method separates substances due to differences in the sizes of their particles.

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

54.

Which method(s) separate substances based on them having different boiling points? (Select all that apply).

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

55.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

56.

Which method has a solid and a gas as the final products?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

57.

Cooking of rice

a)

it undergoes evaporation process

b)

do not undergo evaporation process

c)

it undergoes melting process

d)

it undergoes freezing process

58.

Salt Making

a)

it undergoes evaporation process

b)

do not undergo evaporation process

c)

it undergoes melting process

d)

it undergoes freezing process

59.

This method is a technique used in separating a less-dense substance from a denser one.

a)

decantation

b)

evaporation

c)

distillation

d)

filtration

60.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

61.

What method of separation would work best to separate water and rubber pellets?

a)

filtration

b)

sifting

c)

evaporation

d)

magnetic attraction

62.

Which of of these mixtures could be separated by filtration?

a)

sugar and milk

b)

sand and water

c)

milk and water

d)

sugar and water

63.

Name the method of separation

a)

Fractional distillation

b)

Chromatography

c)

Condensation

d)

Evaporation

64.
A separation technique which uses a fractionating column to separate different liquid components in a mixture with different boiling points by heating mixture is called
a)
Fractional distillation
b)
filtration
c)
crystallization
d)
evaporation
65.

What process is used to separate crude oil in hydrocarbons with different chain lengths?

a)

distillation

b)

fractional distillation

c)

cracking

d)

polymerisation

66.

How to separate meat and sauce?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieivng

67.

It is a technique used in separating a less-dense liquid from a denser one.

a)

Filtration

b)

Evaporation

c)

Sedimentation

d)

Decantation

68.

What process is occurring at the point labelled X?

a)

The process by which the substance changes from liquid to vapor.

b)

The process by which the substance changes from gas to liquid.

c)

A process where it separates two soluble liquid with a significant difference in their boiling point.

d)

The process where solid changes to vapor.

69.

What process is occurring at the point labelled Y?

a)

Evaporation

b)

Condensation

c)

Sublimation

d)

Crystallization

70.

What is the most important feature in fractional distillation?

a)

The two component part must have different boiling point

b)

The two component part must have similar boiling point

c)

The two component part must have same boiling point

71.

Distillation is used to separate ______.

a)

a liquid from its solution.

b)

an insoluble solid from its solution.

c)

a soluble solid from its solution.

72.

Distillation is made up of ___.

a)

evaporation, then condensation

b)

condensation, then evaporation

c)

boiling, then condensation

d)

condensation, then boiling

73.

Fractional distillation is - - - - - - - - -

a)

Normal distillation but there are glass cylinders in the evaporation container

b)

The same as normal distillation

c)

Normal distillation but with filter paper

74.

Fractional distillation doesnt need a thermometer

a)

True

b)

False

75.

Fractional distillation needs a slightly more advanced setup then normal distillation

a)

True

b)

False

76.

Normal distillation and fractional distillation can both separate solutions

a)

True

b)

False

77.

Distillation and fractional distillation can be used to separate......

a)

Solutions

b)

Solid and liquid mixtures

c)

Two liquid mixtures

d)

All the above

78.

A suspension contains:

a)

A bridge hanging over a valley

b)

A solvent and a solute

c)

A solvent and suspended particles

d)

A solution and a solvent

79.

Pure substances contain: 

a)

Only one type of substance

b)

Substances that cannot be chemically separated

c)

A solvent and a solute

d)

All of the above

80.

Which is the best separation technique to get salt from salty water?

a)

Evaporation

b)

Filtration

c)

Distillation

d)

Sieving

81.

Which statement about mixtures is FALSE?

a)

A mixture contains more than one ingredient.

b)

A mixture can be separated.

c)

The ingredients of a mixture keep their physical properties.

d)

All mixtures are food or drink.

82.

Which of the following is not an example of a mixture?

a)

Lemonade

b)

Sodium chloride

c)

Fruit salad

d)

Food colouring and water

83.

The best method of separating a solution from a suspension is

a)

Filtration

b)

Settling

c)

Decanting

d)

Sieving

84.

Which two features identify suspensions?

a)

The components separate out if left to stand

b)

The components do not separate out if left to stand

c)

They are transparent

d)

Particles of one component are suspended in the other component

85.
What is the chemical symbol for Chlorine?
a)
Cl
b)
Ch
c)
Cr
d)
Ce
86.
Which of the following is a chemical compound?
a)
Co
b)
 CO2
c)
Mg
d)
Al
87.
What is the chemical symbol for Potassium?
a)
Po
b)
K
c)
H
d)
P
88.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
89.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
90.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
91.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
92.

One group is typically described as containing materials that are exvellent conductors of electricity, ductile and lustrous. Which of the following groups can be classified by thess characteristics?

a)

metals

b)

nonmetals

c)

elements

d)

compounds

93.

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

a)

pure substance

b)

mixture

c)

solution

d)

compound

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