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Scientific method, matter, mixtures and the periodic table

Total questions: 86

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

What do scientist use to carry out an experiment?

(a)  

2.

The scientific method is

a)

a set of steps that help scientists make sure their work is done the right way.

b)

is anything that is detected through human senses or with instruments and measuring devices that enhance human senses.

c)

:is a possible answer to a scientific question with an explanation that can be tested.

3.

Steps of the Scientific Method

a)

Make an observation

b)

Ask Questions

c)

Form Hypothesis

d)

Test Hypothesis

e)

Results and Draw conclusions

4.

Science is

a)

a set of steps that help scientists make sure their work is done the right way.

b)

the study of the natural world around us.

c)

anything that is detected through human senses or with instruments and measuring devices that enhance human senses.

d)

the process of learning about the natural world through observation and experimentation.

5.

An ____________ is anything that is detected through human senses or with instruments and measuring devices that enhance human senses (sense of touch, smell, taste, or hearing).

a)

observation

b)

Questions

c)

Hypothesis

d)

Results

e)

conclusions

6.

By identifying the problem leads you to form ____________.

a)

observations

b)

questions

c)

conclusions

d)

draw

7.

A ______________ is a possible answer to a scientific question with an explanation that can be tested.

a)

hypothesis

b)

conclusion

c)

theory

d)

observation

8.

A hypothesis should explain what you expect to happen and should be testable.

a)

True

b)

False

9.

If I increase the amount of fertilizer, then the tomato plants will grow more....Is an example of:

a)

conclusion

b)

hypothesis

c)

test

d)

result

10.

An experiment usually has three kinds of variables:

a)

Independent (IV)

b)

Dependent (DV)

c)

Control (CV)

d)

Data (DV)

11.

Independent variable (IV) is:

a)

The change that happens because of the independent variable.

b)

Everything you want to remain constant and unchanging.

c)

The one thing you change to see what effect it has on our results.

12.

Dependent Variable (DV) is:

a)

The change that happens because of the independent variable.

b)

Everything you want to remain constant and unchanging.

c)

The one thing you change to see what effect it has on our results.

13.

Control variable (CV) is:

a)

The one thing you change to see what effect it has on our results.

b)

The change that happens because of the independent variable.

c)

Everything you want to remain constant and unchanging.

14.

A ____________ is something that can be changed, controlled or measured.

a)

result

b)

draw

c)

variable

d)

conclusion

15.

____________ is the information you gather by doing a scientific investigation.

a)

Result

b)

Conclusion

c)

Evidence

d)

Data

16.

The _______ may be quantitative (numbers) or qualitative.

a)

hypothesis

b)

conclusion

c)

results

d)

observations

17.

____________a personal belief that does not need proof.

a)

Opinion

b)

Conclusion

c)

Result

d)

Test

18.

The goal of a scientist is to understand the natural world. To do this a scientist plans and conducts ________________.

a)

opinions

b)

infer

c)

conclusions

d)

investigation

e)

evidence

19.

Scientist use the ________________ they gather to draw ________________.

a)

opinions

b)

infer

c)

evidence

d)

investigation

e)

conclusions

20.

A good scientist does not let his or her personal beliefs, or ________________, influence their study.

a)

opinions

b)

infer

c)

conclusions

d)

investigation

e)

evidence

21.

There many important skills that scientist use. For example, when scientist ________________, they use their observations and prior knowledge to determine what is happening.

a)

opinions

b)

infer

c)

conclusions

d)

investigation

e)

evidence

22.

A scientist is...

a)

They solve these problems by doing science projects called experiments.

b)

Is someone who investigates a field of science and does scientific work.

c)

A person who studies a certain thing or an organism.

d)

Are very curious people who like to solve problems.

e)

All the above.

23.

What does a scientist do?

a)

Observe

b)

Measure

c)

Communicate

d)

All the above.

24.

How do we classify our observations?

a)

Qualitative

b)

Quantitative

c)

Color

d)

Olor

25.

The wall is a light green color.

a)

qualitative

b)

quantitative

26.

One leaf is 9cm long.

a)

qualitative

b)

quantitative

27.

The temperature outside is 25ºC.

a)

qualitative

b)

quantitative

28.

The plant is green and short.

a)

qualitative

b)

quantitative

29.

The temperature outside feels warm.

a)

qualitative

b)

quantitative

30.

The building has 25 stories.

a)

qualitative

b)

quantitative

31.

___________________is the products and processes designed to solve a problem or meet a need.

a)

Engineering

b)

Technology

c)

Geology

32.

_______________ is the practical use of science and math to solve problems to meet needs and wants.

a)

Technology

b)

Engineering

c)

Experiment

33.

__________________ makes technology.

a)

Scientist

b)

Engineering

c)

Geologist

d)

Chemist

34.

Technology is anything made by people that meets a need.

a)

True

b)

False

35.

Technology may be simple like a pencil or complex like a smart phone, but both serve for communicating ideas.

a)

True

b)

False

36.

The difference between a Scientists and an Engineers is ....

a)

Scientists discover new things about the world and universe around us.

b)

Engineers use these scientific discoveries to help design and make new technology.

c)

Scientists use scientific discoveries to help design and make new technology.

d)

Engineers discover new things about the world and universe around us.

37.

Anything that takes up space and has mass is (a)   .

38.

Matter is made up of small particles called (a)   .

39.

Atoms are made of...

a)

neutron

b)

proton

c)

electron

d)

All the above

40.

No charge part of the nucleus is a _______________.

a)

Neutron

b)

Proton

c)

Electron

d)

None of the above

41.

Proton is ...

a)

No charge part of the nucleous

b)

Positively charged part of the nucleous

c)

Negatively charged surrond the nucleus

42.

Negatively charded surround the nucleus is....

a)

Neutron

b)

Proton

c)

Electron

d)

None of the above

43.

Matter can be divided into

a)

Pure substances

b)

Impure substances

c)

atoms

d)

elements

44.

Pure substances can be classified as....

a)

Elements

b)

Compounds

c)

Atoms

d)

Electrons

45.

A substance made of one type of atom only is _______________.

a)

Atom

b)

Matter

c)

Elements

d)

Compounds

46.

A substance formed by the chemical union of two or more elements __________________.

a)

Atom

b)

Elements

c)

Compounds

d)

Neutron

47.

A material that is composed of more than one type of particle is a ________________________.

a)

Pure Substances

b)

Impure Substances

48.

Is a combination of two or more different substances in which the substances keep their identities is _________________.

a)

Matter

b)

Element

c)

Impure substance

d)

Mixture

49.

How can we classify mixtures?

a)

Elements

b)

Heterogenous

c)

Homogeneous

d)

Compounds

50.

The components of the mixture are visible with the naked eye ______________.

a)

Heterogenous Mixture

b)

Homogeneous Mixture

c)

Pure Substances

d)

Impure Substances

51.

The components of the mixture are not visible with the naked eye.

a)

Heterogenous Mixture

b)

Homogeneous Mixture

c)

Pure Substances

d)

Impure Substances

52.
a)

Heterogenous Mixture

b)

Homogeneous Mixture

c)

Pure Substances

d)

Impure Substances

53.

a)

Heterogenous Mixture

b)

Homogeneous Mixture

c)

Pure Substances

d)

Impure Substances

54.

a)

The diagram is showing an atom and an element.

b)

The diagram is showing a molecule of an element.

c)

The diagram is showing a molecule of a compound.

55.

a)

The diagram is showing a molecule of a compound.

b)

The diagram is showing a molecule of an element.

c)

The diagram is showing an atom and an element.

56.

a)

The diagram is showing a molecule of an element.

b)

The diagram is showing a molecule of a compound.

c)

The diagram is showing an atom and an element.

57.

a)

Pure Substances

b)

Compounds

c)

Elements

d)

Impure Substances

58.

a)

Elements

b)

Compounds

c)

Pure Substances

d)

Impure Substances

59.

a)

Heterogenous Mixture

b)

Homogeneous Mixture

c)

Pure Substances

d)

Impure Substances

60.

To form a solution you need…

a)

mixture

b)

Solute

c)

Solvent

d)

element

61.

A __________________is a homogeneous mixture of one or more solutes dissolved in a solvent.

a)

Solute

b)

solution

c)

Solvent

d)

substance

62.

The substance that dissolves in a solvent. Is present in a lesser amount

a)

Solute

b)

Solvent

63.

The substance that dissolves. Is present in greater amount.

a)

Solvent

b)

Solute

64.
a)

Solute

b)

Solvent

65.

a)

solvent

b)

solute

66.

A (a)   is a heterogeneous mixture in which the parts are so small that they do not settle out.

67.

Smoke is an example of .....

a)

solution

b)

colloid

c)

suspension

68.

Iodine is an example of .....

a)

solution

b)

colloid

c)

suspension

69.

Muddy water is an example of ----

a)

solution

b)

colloid

c)

suspension

70.

Mixture between liquid and particles of a solid is a ________________.

a)

solute

b)

solvent

c)

colloid

d)

suspension

71.

A process where you separate susbtances from a mixture by using the magnetic force.

a)

Chromatography

b)

Magnetism

c)

Distillation

d)

Sieving

72.

____________________is used to separate small amounts of chemicals so that they can be analysed.

a)

Magnetism

b)

Distillation

c)

Chromatography

d)

Sieving

73.

It consists of passing a mixture of any type of solids, of different sizes, through the sieve is ______________________.

a)

Filtration

b)

Centrifugation

c)

Evaporation

d)

Sieving

74.

It is used to separate components of different densities. In this process, the liquid is emptied from the mixture slowly, without agitating the sediment.

a)

Filtration

b)

Decantation

c)

Centrifugation

d)

Evaporation

75.

Method used to separate heterogeneous mixtures formed by a solid and a liquid. It consists of passing the mixture through a filter.

a)

Centrifugation

b)

filtration

c)

Evaporation

d)

Sieving

76.

Identify the symbol of Calcium

a)

C

b)

Ca

c)

Cal

d)

Calcium

77.

Atomic number of Calcium is

a)

20

b)

40.078

c)

40

78.

identify the period of Calcium

a)

1

b)

2

c)

3

d)

4

79.

Identify the group of calcium.

a)

1

b)

2

c)

3

d)

4

80.

Identify the atomic mass of Calcium

a)

20

b)

40

81.

Calculate protons

(a)  

82.

Calculate the Electrons

(a)  

83.

Calculate the Neutrons

(a)  

84.

Alkali Metals

a)

pink

b)

red

c)

light purple

85.

Halogens

a)

red

b)

pink

c)

light purple

86.

Alkaline Earth Metals

a)

red

b)

orange

c)

purple

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