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Total questions: 122

Worksheet time: 3hrs 31mins

Name
Class
Date
1.

___________ are the smallest unit of an element that maintains the properties of that element.

a)

Atoms

b)

Elements

c)

Compounds

d)

Mixtures

2.

A ______________ is made up of different kinds of atoms chemically combined.

a)

element

b)

compound

c)

mixture

d)

molecule

3.
__________ are made up of solutes and solvents.
a)

Solutions

b)

Compound

c)

Alloy

d)

Substance

4.
Substance dissolved in a solution
a)
concentration
b)
solute
c)
solvent
d)
solution
5.

Combination of two or more substances that are chemically combine and take on new properties

a)

compound          

b)

atom

c)

mixture 

d)

element

6.
A combination of particles of one or more substance that are distributed uniformly throughout another substance is a/an
a)

Heterogeneous Mixture 

b)

Substance

c)

Homogeneous Mixture

7.

When making a fruit drink from a powdered mixture, water is the __________

a)

dissolving part

b)

solute

c)

solution

d)

solvent

8.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

9.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
10.

Is sugar a compound or a element

a)

compound

b)

element

c)

mixture

11.

Which is an example of a mixture?

a)

Silver

b)

Pure Water (H2O)

c)

Soil

d)

Copper wire (Cu)

12.

Which of the following is an element?

a)

OH

b)

Saltwater 𝑁𝑎𝐶𝑙 + H2O

c)

CO

d)

Potassium (K)

13.

A molecule of limestone, CaCO3, has how many total atoms?

a)

3

b)

5

c)

6

d)

12

14.

How many TOTAL atoms are in a molecule of glucose/sugar (C6H12O6)?

a)

6

b)

12

c)

18

d)

24

15.

How many NITROGEN atoms in an ammonia (NH3) molecule?

a)

1

b)

2

c)

3

d)

4

16.

A metal made by combining two or more metallic elements to make it stronger, cheaper, or resist rusting

a)

compound

b)

element

c)

alloy

d)

molecule

17.

This is an example of

a)

An element atom

b)

An element molecule

c)

A compound molecule

d)

A homogeneous mixture

18.

Which letter shows a mixture of compounds?

a)

E

b)

B

c)

F

d)

H

19.

Which letter shows a mixture of elements?

a)

E

b)

B

c)

F

d)

H

20.

The short hand for an element is

a)

chemical symbol

b)

chemical formula

c)

atomic number

d)

Ms. Suk is cool(don’t pick this one)

21.

It is a simple statement that presents the possible solution to the problem.

a)

hypothesis

b)

experiment

c)

conclusion

d)

variables

22.

It is also called as the constant variables, in which the variables are kept constant.

a)

Independent variables

b)

controlled variables

c)

dependent variables

d)

variables

23.

It is a forecast of future events based on past observation. And sometimes interchangeable to hypothesis.

a)

hypothesis

b)

fair testing

c)

prediction

d)

experiment

24.

Anything that can change in an experiment is called a ________.

a)

measurement

b)

variable

c)

obeservation

d)

hypothesis

25.

In the set experiment about "does the fertilizer affect the growth of plants", the amount of fertilzer is what kind of variable?

a)

independent variable

b)

dependent variable

c)

controlled variable

26.

It is the fifth step in scientific method, that states the summary of the results of the experiment and here is the statement of how the results match up to the hypothesis.

a)

Reporting findings

b)

Analyzing data and Presenting Data

c)

Creating a conclusion

27.

It is an orderly process of empirical investigation that is focused on solving a problem.

(a)  

28.

It is a kind of experiment in which one condition (independent variable) affects another (dependent variable) by keeping all the conditions constant.

(a)  

29.

The amount of water, amount of sunlight, and kind and initial size of the plants is what kind of variables?

a)

controlled variables

b)

dependent variables

c)

independent variables

30.

A kind of experiment in which named to draw a contrast with laboratory experiments .

a)

Natural experiment

b)

field experiment

c)

quasi-experiment

31.

What step does every scientific experiment begin with?

a)

hypothesis

b)

background research

c)

question/problem

d)

conclusion

32.

True or False: Your hypothesis can never be wrong.

a)

True

b)

False

33.

Should experiments be repeated over and over to see if the results are the same each time?

a)

Yes

b)

No

34.

The information you record in an experiment is called your ____________.

a)

Data

b)

Notebook

c)

Conclusion

d)

Inquiry

35.

A series of steps is used by scientists to solve a problem or answer a question.

a)

Scientific method

b)

Data collection

c)

Recipe

d)

Metric system

36.

An observation that is measurable and made with tools (such as a ruler or scale) is what type

a)

quantitative

b)

koalatative

c)

qualitative

37.

In any experiment, the independent variable ______________.

a)

remains the same to not mess up the experiment

b)

is purposely changed to test the hypothesis

c)

is known by the scientist before doing the experiment

38.

How many steps are in the scientific method?

a)

5

b)

8

c)

6

d)

7

39.

What is the final step in the scientific method?

a)

Write a conclusion about your results

b)

Record and analyze the data

c)

Form a hypothesis

d)

Research your topic

40.

What is the purpose of the scientific method?

a)

To solve problems and create experiments

b)

To research new information

c)

To practice safety

d)

To become a scientist

41.

Why is the following considered a bad hypothesis? "If your plants grew taller, then they were given fertilizer."

a)

It doesn't have "if" and "then"

b)

The prediction is wrong

c)

The independent and dependent variable are in the wrong order

d)

This is a good hypothesis

42.

A dependent variable is __________.

a)

What is measured in an experiment

b)

What you change in an experiment

c)

A prediction about an experiment

d)

What stays the same in an experiment

43.

What does a good scientific question need to have?

a)

It needs to have an independent variable

b)

It needs to have a dependent variable

c)

It need to be measurable

d)

All of these are needed in a good scientific question

44.

A qualitative observation is ________.

a)

Describing qualities and characteristics

b)

A guess you make using an observation

c)

Numbers and labels

d)

What is kept the same in an experiment

45.

What is a procedure?

a)

Step by step instructions

b)

Safety rules

c)

What stays the same in an experiment

d)

A prediction

46.

What is the main reason scientists have constants?

a)

So scientists know their results came only from the independent variable and nothing else

b)

So scientists stay safe

c)

So scientists can record data easier

d)

So the experiment is clear and easy to understand

47.

What is the first step in the scientific method?

a)

Form a hypothesis

b)

Make an observation and ask a question about it

c)

Research your topic

d)

Record and analyze data

48.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
49.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
50.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
51.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
52.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Elements
53.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Mixture of Elements & Compounds
c)
Mixture of Compounds
d)
Compounds
54.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Mixture of Elements & Compounds
c)
Mixture of Compounds
d)
Compounds
55.
which one only has one type of atom In it.
a)
Element
b)
compound
56.
Which one has more than one type of atom in it
a)
Element
b)
Compound 
57.
Compounds are chemically bonded together 
a)
False
b)
True
c)
I don't know?
58.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
59.
Which state of matter do the particles in this picture represent?
a)
solid
b)
liquid
c)
gas
d)
plasma
60.
What does this picture represent? 
a)
solid
b)
liquid
c)
gas
d)
plasma
61.
What does this picture represent? 
a)
solid
b)
liquid 
c)
gas
d)
plasma
62.
Matter can change states from solid to liquid to gas when 
a)
a.   heat is removed
b)
a.   heat is added
c)
a.   water is added
d)
a.   mass is added
63.

How does water become a compound?

a)

Because it is polar.

b)

Because of its molar mass.

c)

Because it composed of 1 hydrogen and 2 oxygen

d)

Because it composed of 1 oxygen and 2 hydrogen.

64.

Why is water known as universal solvent?

a)

It is found anywhere.

b)

It covers the greater part of the earth.

c)

It gives life to living things.

d)


It dissolves almost all the substances on Earth.

65.

Heat was applied to a container with an unknown liquid. The liquid component evaporated and a solid residue/precipitate appeared in the container. How do you classify the liquid material?

a)

substance

b)


element

c)

compound

d)

mixture

66.

Which of the following statements is NOT TRUE?

a)

A pure substance has no other substance mixed in it.

b)


Melting will take place at a lower temperature in an impure substance than the pure substance.

c)

Pure substance can be separated by physical means such as filtration, evaporation, distillation.

d)

Distilled water, steel, salt and air are all examples of pure and impure substances.

67.

Which of these is an element?

a)


Salt (NaCl)

b)

Oxygen (O)

c)

Water (H20)

d)


Carbon Dioxide (CO2)

68.

Identify the separating of mixtures in this process as shown in the picture.

(a)  

69.

This method drives off the liquid components from the solid components. The process typically involves heating the mixture until no more liquid remains

a)

Condensation

b)

Fumigation

c)

Centrifugation

d)

Evaporation

70.

A process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension

a)

Condensation

b)

Decantation

c)

Filtration

d)

Solidification

71.

Name of the device, generally driven by an electric motor, that puts an object, e.g., a rotor, in a rotational movement around a fixed axis.

a)

Centrifugal Force

b)

Centrifugation

c)

Centrifuge

d)

Centripetal Force

72.

A technique that helps to separate mixtures by applying centrifugal force.

a)

Centrifuge

b)

Centrifugation

c)

Centrifugal

d)

Centrifugal force

73.

Method used for separating and identifying mixtures that are or can be colored, especially pigments

a)

Chloroform

b)

Chromatography

c)

Photography

d)

Staining

74.

A purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

a)

Distillation Process

b)

Condensation Process

c)

Evaporation Process

d)

Filtration Process

75.

In simple distillation, a mixture is heated, and the most volatile component vaporizes at the lowest temperature. The vapor passes through a cooled tube (a condenser), where it condenses back into its liquid state. The condensate that is collected is called (a)  

76.

This is only useful when the particles are large enough to be seen clearly.

a)

Foot Picking

b)

Hand Picking

c)

Mouth Picking

d)

Tail Picking

77.

Mixture is allowed to fall from a height. The lighten components get separated from the heavier ones because of wind or air blow. This method is used to separate lighter husk from heavier Grains like wheat.

a)

Sieving

b)

Winnowing

c)

Hand Picking

d)

Treshing

78.

Method that generally used by the farmers to separate the grains from the stalks after harvesting. The dried stalks are beaten or threshed to separate the grains.

a)

Hand picking

b)

Sieving

c)

Winnowing

d)

Threshing

79.

Matter is anything that occupies space and has a mass.

a)

True

b)

False

80.

What are the two types of Matter.

a)

Heterogeneous
And
Homogeneous

b)

Mixture
And
Heterogeneous

c)

Pure Substances
And
Mixture

d)

Pure Subastance
And
Hemogeneous

81.

Fruit Loops,Pizza and Skittles are example of_________________________mixtures?

a)

Pure

b)

Heterogeneous

c)

Homogeneous

82.

Seperating mixtures based on boiling point is Distillation,It's it True or False?

a)

True

b)

False

83.

Air is:

a)

A Compound

b)

A mixture

c)

A element

d)

None of these

84.

Which of substances, when mix together, maintain their orignal physical properties?

a)

Gravel And Water

b)

wood chips,water
and sand

c)

Sand And Water

d)

All of the above

85.

A pure substance that cannot be broken into other substances by chemical or physical means

a)

Atom

b)

Compound

c)

Element

d)

Mixture

86.

Everything is made of_______?

a)

Matter

b)

Water

c)

Mud

d)

Mixture

87.

Seperating the mixture based on boiling points:

a)

Condensation

b)

Decantation

c)

Distallation

d)

Desalination

88.

Which one of these is the Mixtures?

a)

Oxygen(O)

b)

Flourine(Fl)

c)

Salt(NaCl)

d)

Laundry Detergent

89.

this equipment name is . . . .

a)

tongs

b)

spatulas

c)

iron stands

d)

clamps

90.

this equipment name is . . . .

a)

tongs

b)

spatulas

c)

iron stands

d)

clamps

91.
What piece of equipment is used to transfer substances into a container with small openings?
a)
Erlenmeyer flask
b)
tongs
c)
beaker
d)
funnel
92.
Name the equipment 
a)
iron tower
b)
iron ring 
c)
iron stand 
d)
iron base
93.
Name the equipment
a)
graduated cylinder
b)
test tube
c)
thermometer
d)
beaker
94.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
95.
Identify the equipment shown here:
a)
crucible
b)
evaporating dish
c)
mortar and pestle
d)
bowl
96.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
97.
Identify the equipment shown here:
a)
beakers
b)
flasks
c)
decanters
d)
graduated cylinders
98.
Identify the equipment shown here:
a)
ring stand
b)
iron ring
c)
utility clamp
d)
test tube holder
test tube holder
99.
Identify the equipment shown here:
a)
graduated cylinder
b)
Erlenmeyer flask
c)
beaker
d)
volumetric flask
100.

This equipment is composed of a metal rod that is upright and sits on a heavy base; used to hold iron ring and clamp.

a)

TRIPLE BEAM BALANCE

b)

DOUBLE BEAM BALANCE

c)

ELECTRONIC BALANCE

d)

IRON STAND

e)

IRON RING AND CLAMP

101.

This equipment is used for quick and more accurate measurement of mass.

a)

TRIPLE BEAM BALANCE

b)

DOUBLE BEAM BALANCE

c)

ELECTRONIC BALANCE

d)

IRON STAND

e)

IRON RING AND CLAMP

102.

This instrument for measuring mass works like a seesaw. It gets its name from the two pans or balances from either side of the fulcrum.

a)

TRIPLE BEAM BALANCE

b)

DOUBLE BEAM BALANCE

c)

ELECTRONIC BALANCE

d)

IRON STAND

e)

IRON RING AND CLAMP

103.

This is an instrument used to measure mass very precisely. Its name refers to the three beams, each of which is provided with a sliding weight.

a)

TRIPLE BEAM BALANCE

b)

DOUBLE BEAM BALANCE

c)

ELECTRONIC BALANCE

d)

IRON STAND

e)

IRON RING AND CLAMP

104.

This flask has a thin neck and wide base, useful in mixing because there is a low chance of spill.

a)

FLORENCE FLASK

b)

ERLENMEYER FLASK

c)

TEST TUBES

d)

BEAKER

105.

May be made of wood, metal or plastic, this is used to hold test tubes in an upright position.

a)

TEST TUBE HOLDER

b)

TEST TUBE BRUSH

c)

TEST TUBE RACK

d)

TEST TUBES

106.

This equipment is used to indirectly hold test tubes during a heating process.

a)

TEST TUBE HOLDER

b)

TEST TUBE BRUSH

c)

TEST TUBE RACK

d)

TEST TUBES

107.

These are used to store, mix and observe small amount of solid or liquid samples.

a)

BEAKER

b)

FUNNEL

c)

EVAPORATING DISH

d)

GRADUATED CYLINDER

e)

TEST TUBES

108.

This equipment is marked with milliliter (ml) scale and is used to measure volume of liquids.

a)

BEAKER

b)

FUNNEL

c)

EVAPORATING DISH

d)

GRADUATED CYLINDER

e)

TEST TUBES

109.

This glassware is used for for the evaporation of solutions or other mixture.

a)

BEAKER

b)

FUNNEL

c)

EVAPORATING DISH

d)

GRADUATED CYLINDER

e)

TEST TUBES

110.

It could be made of glass or plastic which is used to hold a filter paper or for pouring liquids to avoid spills.

a)

BEAKER

b)

FUNNEL

c)

EVAPORATING DISH

d)

GRADUATED CYLINDER

e)

TEST TUBES

111.

This is the most commonly used container for liquids to show approximate volume and may be heated.

a)

BEAKER

b)

FUNNEL

c)

EVAPORATING DISH

d)

GRADUATED CYLINDER

e)

TEST TUBES

112.

What is Science?

a)

A series of procedures to help you solve problems.

b)

A way to find out what is wrong in this world.

c)

An organized way of studying the natural world and finding solutions to common problems.

d)

The way scientists make up general rules.

113.

Scientists use _________________ to visualize problems or ideas.

a)

models

b)

pickles

c)

frogs

d)

standards

114.

Science is a way of learning about the ________________ world.

a)

natural

b)

supernatural

c)

ideal

d)

revolutionary

115.

Scientific _________________________ are possible explanations for patterns.

a)

theories

b)

laws

c)

ideas

d)

worlds

116.

Scientists make ___________________ about the world around them.

a)

observations

b)

opinions

117.

A _____________ is a person who uses the scientific method to discover new knowledge.

a)

menace

b)

scuba diver

c)

scientist

d)

botanist

118.

What is a series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions?

a)

scientific method

b)

experimenting

c)

playing

d)

making a mess

119.
The temperature when a solid changes to a liquid - 
a)
melting point
b)
freezing point
c)
boiling point
120.

The melting and boiling point of a substance are physical properties.

a)

true

b)

false

121.

All substances have the same melting points.

a)

false

b)

true

122.
When a solid reaches the temperatures of its ___, it can become a liquid.
a)
melting point
b)
freezing point
c)
boiling point
d)
density

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