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Worksheets

Elements, Compounds, and Solutions

Total questions: 69

Worksheet time: 35mins

Name
Class
Date
1.

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

2.

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

a)

Element

b)

compound

c)

mixture

d)

solution

3.

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

4.

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

5.

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

6.

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

a)

3

b)

12

c)

24

d)

4

7.

Which of the following is a heterogenous mixture?

a)

neon

b)

soil

c)

steel

d)

salt water

8.

Which of the following is a homogeneous mixture?

a)

sand in a bottle

b)

lemonade

c)

Mercury

d)

salad

9.

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

a)

element

b)

homogenous

c)

heterogenous

d)

compound

10.

Which of the diagrams below represent a mixture?

a)

A

b)

B

c)

C

d)

D

11.

Is tea a mixture or a solution?

a)

Mixture

b)

Solution

12.

Is soap a mixture or solution?

a)

Mixture

b)

Solution

13.

What is a mixture?

a)

The combination of two or more substances.

b)

An ingredient.

c)

A liquid.

d)

A gas.

14.

Is fruit salad a mixture or solution?

a)

Mixture

b)

Solution

15.

What is a solution?

a)

A type of mixture where one substance dissolves in another

b)

An ingredient.

c)

A liquid.

d)

A gas.

16.

Is Kool-Aid a mixture or a solution?

a)

Mixture

b)

Solution

17.

How can we remove sand from a sand and water mixture?

a)

Hands

b)

Filter

c)

Magnet

18.

Is salad a mixture or a solution?

a)

Mixture

b)

Solution

19.

How can we remove sugar from a sugar water solution?

a)

Melting

b)

Magnet

c)

Put it out in the sun / heat it up / Evaporation

d)

Tweezers

20.

Is oil and water a mixture or a solution?

a)

Mixture

b)

Solution

21.

In a mixture, the properties of a substance ______________

a)

do not change

b)

change forms

c)

turn into a liquid

d)

become solid

22.

Is cereal a mixture or solution?

a)

Mixture

b)

Solution

23.

Mixtures are _________

a)

easily separated

b)

impossible to separate

c)

always solutions

d)

only liquids

24.

Is sand and iron filings a mixture or solution?

a)

Mixture

b)

Solution

25.

When a substance dissolves, that means its particles _________.

a)

spread out evenly

b)

disappear

c)

turn into water

26.

Which of the following is the best description of an element?

a)

A substance that cannot be broken down into simpler substances.

b)

A naturally occurring mineral made of more than one substance.

c)

A small particle made with a specific chemical composition.

d)

A collection of atoms that have different abilities when joined together.

27.

Provided is a list of five different substances.

NaOH     Cu    H2O     N2    H2

How many of these substances are elements?

a)

2

b)

3

c)

4

d)

5

28.

Which element is one of the most abundant in both solid parts of Earth and in living matter?

a)

Carbon

b)

Oxygen

c)

Nitrogen

d)

Phosphorus

29.

Which element makes up most of Earth's atmosphere?

a)

Hydrogen

b)

Carbon

c)

Oxygen

d)

Nitrogen

30.

Below is a list of some substances and their symbols.

Oxygen O

Sodium Chloride NaCl

Gold Au

Neon Ne

How many of these substances are an example of an element?

a)

1

b)

2

c)

3

d)

4

31.

How are elements and compounds different?

a)

A compound is represented by a chemical formula, and elements are represented by a chemical symbol.

b)

Compounds are represented by chemical symbols of one letter, and elements are represented by symbols of two letters.

c)

Elements are pure substances, and compounds are not.

d)

Elements are always larger units of matter, and compounds are smaller.

32.

How many elements are in the compound Fe2O3?

a)

0

b)

1

c)

2

d)

3

33.

Which "sphere" includes all water?

a)

Hydrosphere

b)

Lithosphere

c)

Atmosphere

d)

Biosphere

34.

Which 'sphere' has oxygen and nitrogen as its two main elements?

a)

Lithosphere

b)

Biosphere

c)

Atmosphere

d)

Hydrosphere

35.

Which 'sphere' has oxygen and carbon as its two main elements?

a)

Atmosphere

b)

Lithosphere

c)

Hydrosphere

d)

Biosphere

36.

Oxygen and ____ are the main elements found in the Lithosphere!

a)

Silicon

b)

Carbon

c)

Nitrogen

d)

Aluminum

37.

Which 'sphere' has oxygen and hydrogen as its two main elements?

a)

Atmosphere

b)

Biosphere

c)

Lithosphere

d)

Hydrosphere

38.

Hydrogen is considered an element, while hydrogen peroxide is considered a compound. This is because hydrogen peroxide is...

a)

is used for cleaning wounds.

b)

made of two different elements.

c)

is a liquid.

d)

useful to human beings.

39.

The smallest particle of matter

a)

Element

b)

Compound

c)

Atom

d)

Chemical

40.

Rocks are primarily composed of which two elements?

a)

Hydrogen and Oxygen

b)

Oxygen and Silicon

c)

Calcium and Hydrogen

d)

Carbon and Nitrogen

41.

All of the following elements are major components of soil on Earth except:

a)

Oxygen

b)

Iron

c)

Hydrogen

d)

Calcium

42.

The hydrosphere is mostly comprised of Hydrogen and ...

a)

Oxygen

b)

Silicon

c)

Carbon

d)

Hydrogen

43.

Which of the following three elements are most abundant in the lithosphere?

a)

Aluminum, oxygen, and silicon

b)

Oxygen, carbon, and hydrogen

c)

Silicon, nitrogen, and calcium

d)

Nitrogen, oxygen, and silicon

44.

Which two elements are most common in both the hydrosphere and biosphere?

a)

Hydrogen and oxygen

b)

Nitrogen and oxygen

c)

Calcium and nitrogen

d)

Oxygen and carbon

45.

All of the following elements are major components of plants on Earth except...

a)

Carbon

b)

Oxygen

c)

Nitrogen

d)

Iron

46.

A mixture in which its composition is the same throughout the mixture and it cannot easily be identified nor separated

a)

Homogenous Mixture

b)

Heterogenous Mixture

47.

Water and Sugar Mixture are what kind of mixture

a)

Homogenous Mixture

b)

Heterogenous Mixture

48.

A mixture in which its composition is not the same throughout the mixture and particles or substances in the mixture can still be identified and separated

a)

Homogenous Mixture

b)

Heterogenous Mixture

49.

Came from the Greek roots hom-, meaning ‘same’ and genos, meaning ‘kind’

a)

Homogenous Mixture

b)

Heterogenous Mixture

50.

Water and Oil Mixture are what kind of mixture

a)

Homogenous Mixture

b)

Heterogenous Mixture

51.

Came from the Greek heterogenḗs, hetero–, meaning ‘different’ and génos, ‘kind’

a)

Homogenous Mixture

b)

Heterogenous Mixture

52.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

53.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

54.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

55.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

56.

Give 2 Homogenous Mixtures found at home

4 lines
57.

Give 2 Heterogenous Mixtures found at home

4 lines
58.

A mixture in which its composition is the same throughout the mixture and it cannot easily be identified nor separated

a)

Homogenous Mixture

b)

Heterogenous Mixture

59.

Water and Sugar Mixture are what kind of mixture

a)

Homogenous Mixture

b)

Heterogenous Mixture

60.

A mixture in which its composition is not the same throughout the mixture and particles or substances in the mixture can still be identified and separated

a)

Homogenous Mixture

b)

Heterogenous Mixture

61.

Came from the Greek roots hom-, meaning ‘same’ and genos, meaning ‘kind’

a)

Homogenous Mixture

b)

Heterogenous Mixture

62.

Water and Oil Mixture are what kind of mixture

a)

Homogenous Mixture

b)

Heterogenous Mixture

63.

Came from the Greek heterogenḗs, hetero–, meaning ‘different’ and génos, ‘kind’

a)

Homogenous Mixture

b)

Heterogenous Mixture

64.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

65.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

66.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

67.

Refer to the picture shown. What kind of mixture is it?

a)

Homogenous Mixture

b)

Heterogenous Mixture

68.

Give 2 Homogenous Mixtures found at home

4 lines
69.

Give 2 Heterogenous Mixtures found at home

4 lines

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