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elements, mixtures and compunds

Total questions: 69

Worksheet time: 41mins

Name
Class
Date
1.
Contains only one kind of atom.
a)
Element
b)
Compund
c)
Mixture
2.
Contains two or more atoms combined
a)
Elements
b)
Compounds
c)
Mixtures
3.
The air is a _________. 
a)
element 
b)
mixture 
c)
compound 
d)
energy 
4.
Elements can be broken down into simpler substances. 
a)
false 
b)
true 
c)
sometimes 
5.
Examples are milk and gasoline.
a)
elements
b)
mixtures
c)
compounds
6.

Examples are diamonds (C) and Uranium (U)

a)

elements

b)

mixtures

c)

compounds

7.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
8.
What is H2SO4 
 made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
9.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
10.
In general, metals are _____. 
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity 
d)
good conductors of heat
11.
Shiny
a)
Metal
b)
Nonmetal
12.
Sulfur
a)
Metal
b)
Nonmetal
13.
What is salad?
a)
element
b)
compound
c)
mixture
14.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
15.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
16.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
17.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
18.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Compound
c)
Mixture of Compounds
d)
Element
19.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
20.
Classify the picture with the correct label.
a)
Mixture of Compounds
b)
Mixture of Elements
c)
Compound
d)
Mixture of Elements & Compounds
21.

What makes elements and compounds different from mixtures? Elements & compounds-

a)

have a constant composition (pure substances)

b)

are made of gases

c)

Will not change when heated

d)

conduct electric current

22.

What is the relationship between molecules and atoms?

a)

Molecules are combinations of two or more atoms.

b)

Molecules are the parts that make up atoms

c)

Molecules are the gaseous parts of atoms

d)

Molecules are atoms that have a positive charge

23.

Mixtures are different than pure substances because mixtures-

a)

have lower boiling points

b)

can be separated physically

c)

are less dense than pure substances

d)

contain only one type of atom

24.

Which of the following is true of oxygen?

a)

Oxygen is an element because its most basic unit is a single type of atom

b)

Oxygen is a compound because its most basic unit is a single type of atom.

c)

Oxygen is a mixture because its most basic unit contains more than one particle.

d)

Oxygen is a compound because its most basic unit contains more than one type of particle.

25.

Beatriz wants to make a mixture out of her bowl of blueberries. Which of the following would turn her bowl of blueberries into a mixture?

a)

adding more blueberries to the bowl

b)

adding raspberries to the bowl

c)

cutting up the blueberries

d)

mashing the blueberries

26.

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

a)

an element made of carbon and oxygen atoms.

b)

a solution made of carbon and oxygen atoms.

c)

a compound of carbon and oxygen atoms.

d)

a mixture of carbon and oxygen atoms.

27.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
28.
Salt is a(n)
a)
element
b)
compound
c)
mixture
29.
This contains a variety elements and compounds that ARE NOT chemically combined.
a)
Water
b)
Mixture
c)
Elements
d)
Compounds
30.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
31.
A pure substance that cannot be broken down into other substances by chemical or physical means. 
a)
compound          
b)
atom
c)
mixture 
d)
element
32.
The building block of matter is
a)
Mixture
b)
Atom
c)
Element
d)
Substance
33.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
34.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
35.
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
36.
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
37.
a)
Element
b)
Compound
c)
Mixture of compound and element
d)
Mixture of elements
38.
a)
Element
b)
Compound
c)
Mixture of compound and element
d)
Mixture of elements
39.
To change a solid to a liquid, what do you add?
a)
heat
b)
water
c)
cold
d)
mass
40.
Mixtures are __________ combined.
a)
Chemically
b)
Physically
c)
Magically
d)
Spontaneously
41.
Based off of the image, what type of matter is shown?
a)
gas
b)
solid
c)
liquid
42.
What is CO2 and example of?
a)
element
b)
mixture
c)
compound
43.
The drops of water that appear on the outside of a glass of cold juice on a warm day are an example of?
a)
sublimation
b)
condensation
c)
evaporation
44.
Has a definite volume but no shape.
a)
Liquid
b)
Solid
c)
Gas
d)
Fluid
45.

Anything that has mass and has weight

a)

mixture

b)

compound

c)

Matter

d)

Element

46.

The smallest particle of matter

a)

atom

b)

electron

c)

Proton

d)

Element

e)

Compund

47.

Can an element be broken down into a simpler substance?

a)

Yes

b)

No

48.

Is salt an element?

a)

Yes

b)

No

49.

Are there more compounds or more elements?

a)

Compounds

b)

Elements

50.

Which of the following is not a compound?

a)

HCl

b)

Cl

c)

NaCl

d)

CO2

51.
Salt has a chemical formula of NaCl.  Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
52.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
53.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
54.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
55.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
56.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
57.
In general, metals are _____. 
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity 
d)
good conductors of heat
58.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
59.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
60.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
61.
What is the boiling point of water?
a)
0oC
b)
100oC
c)
80oC
d)
95oC
62.

What separation technique would you use to separate black ink into its components?

a)

Water

b)

Sollution

c)

Chromotography

d)

Distillation

63.

Name the following compound

MgO

a)

Magnesium dioxide

b)

Mangosium oxide

c)

Magnesium oxide

d)

Dimagnesium oxide

64.

Over 100 existing elements are listed and classified on the ____________________.

a)

Periodic Sheet

b)

Periodic Grid

c)

Periodic Table

d)

Periodic Key

65.

The atoms are _________________ combined in some way. Often times (but not always) they come together to form groups of atoms called molecules.

a)

Chemically

b)

Physically

c)

Mentally

d)

Emotionally

66.

Compounds ___________________ be separated by physical means. Separating a compound requires a chemical reaction.

a)

Cannot

b)

Can

67.

Mixtures can be separated into their components by chemical or physical means.

a)

True

b)

False

68.

The properties of a compound are usually different than the properties of the elements it contains.

a)

True

b)

False

69.

The properties of a compound are usually different than the properties of the elements it contains.

a)

True

b)

False

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