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Six Weeks Test Review

Total questions: 58

Worksheet time: 42mins

Name
Class
Date
1.

Which of the following represents an element?

a)

H2O

b)

H

c)

NaCl

d)

CaCO3

2.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
3.
Salt has a chemical formula of NaCl.  Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
4.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
5.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
6.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
7.
A combination of substances that are not chemically combined is called a(n)____________. 
a)
mixture
b)
compound
c)
physical
8.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
9.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
10.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
11.

GOLD

a)

Al

b)

Ag

c)

Ar

d)

Au

12.

COPPER

a)

C

b)

Ca

c)

Cu

d)

Cl

13.

The chemical symbol for Helium is

a)

H

b)

Hg

c)

He

d)

O

14.

Is the following an element or compound: CaCO3?

a)

Element

b)

Compound

c)

Both

d)

Neither

15.

When two or more elements chemically combine

a)

element

b)

compound

c)

mixture

d)

solution

16.
Compounds are represented by a...
a)
Capital Letter
b)
Chemical symbol 
c)
Chemical formula 
d)
Chlorine 
17.
Compounds are different than elements because compounds are -
a)
A combination of two or more elements.
b)

B)not able to be broken down into parts
c)
made from the same type of atoms
d)
a pure substance, elements are not
18.

What does C in the element carbon represent on the periodic table?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

19.
Which one can be found on the periodic table?
a)
Compound 
b)
Element
20.
What do all chemical symbols have?
a)
one upper case letter
b)
one lower case letter
c)
one number
d)
two letters
21.

When compound X is poured into a beaker with compound Y a precipitate forms. This is strong evidence to show that

a)

a physical change has taken place

b)

a chemical change has taken place

c)

the mixture has the properties of both X and Y

d)

the mixture is most likely a suspended solution

22.

What type of process is represented by this illustration?

a)

an endothermic reaction

b)

a nuclear reaction

c)

a physical change

d)

a chemical reaction

23.

Which of the following represents a chemical reaction occurring to a popsicle stick?

a)

breaking the popsicle stick in half

b)

placing the popsicle stick inside a frozen popsicle

c)

putting the popsicle stick into water

d)

burning the popsicle stick

24.

When vinegar and baking soda combine, bubbles appear because

a)

a mixture forms

b)

a new gas forms

c)

the vinegar is a liquid

d)

the baking soda dissolves

25.

Some power plants produce energy by burning coal. In these power plants, the heat from burning coal is used to boil water. Which statement BEST describes the changes that occur when burning coal and boiling water?

a)

Burning coal and boiling water are both physical changes.

b)

Burning coal and boiling water are both chemical changes.

c)

Burning coal is a chemical change, and boiling water is a physical change.

d)

Burning coal is a physical change, and boiling water is a chemical change.

26.

Your science instructor gives you a sample of an element and asks you to classify it based on its properties. You find that this substance is a poor conductor of electrical current, a poor conductor of heat, and its appearance is dull and brittle. Based on these observations, you can determine that the substance is a __________.

a)

nonmetal

b)

semimetal

c)

metal

d)

none of the above

27.

Which material BEST conducts heat and electricity?

a)

metal

b)

plastic

c)

rubber

d)

wood

28.

Hasheem has four unknown substances. He wants to know which substances are metal. He makes some

observations of each substance and records his data in the table.

Based on Hasheem’s observations, which substances are MOST likely metals?

a)

1 and 3

b)

1 and 4

c)

2 and 3

d)

2 and 4

29.

An element with which property would be BEST to use in electrical wiring?

a)

insulator

b)

conductor

c)

malleable

d)

porous

30.

Which statement concerning metals is correct?

a)

metals are soluable

b)

metals conduct electricity

c)

metals form rigid structure

d)

metals have a low melting point

31.

An element can be classified as a metal based on its __________.

a)

malleability

b)

shininess

c)

ductility

d)

all of the above

32.
Describe what luster means
a)
How an object reflects light
b)
How soft an object is
c)
If an object floats
d)
If an object can be dug out of the earth.
33.
I have an object that is dull, brittle, and an insulator, what is it?
a)
metalloid
b)
non-metal
c)
metal
d)
matter
34.
When an object changes shape when struck by a hammer.
a)
luster
b)
malleable
c)
brittleness
d)
ductile
35.
What physical properties are used to classify elements as metals, non-metals, or metalloids?
a)
Color, smell, physical state
b)
Reactivity, streak, hardness
c)
Ability to burn, mass, density
d)
Luster, conductivity, malleability
36.
Which of the following is NOT an example of a chemical reaction?
a)
Wood Burning
b)
A cake baking in an oven
c)
Melting Ice Cream
d)
Mixing Vinegar and Baking Soda
37.

What is the term for a solid that is formed by mixing together two solutions?

a)

Heat of reaction

b)

Precipitate

c)

Aqueous solution

d)

Exothermic

38.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
39.
What does it mean to be ductile?
a)
able to be hammered into different shapes
b)
able to be drawn into a wire
c)
heavy for their size
d)
break or shatter easily
40.
Carbon is dull and brittle. Carbon is a 
a)
metal
b)
nonmetal
c)
metalloid
d)
metallica
41.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
42.
A substance that is shiny and a good conductor would be classified as a
a)
nonmetal
b)
metalloid
c)
metal
d)
metallica
43.
A substance that can be hammered into different shapes would be classified as a 
a)
metal
b)
nonmetal
c)
metalloid
d)
metallica
44.
If an object has luster it ______
a)
can be stretched into a wire
b)
reflects light
c)
is dense
d)
can conduct heat and electricity
45.
dull
a)
metal
b)
nonmetal
c)
metalloids
46.
semiconductor
a)
metal
b)
nonmetal
c)
metalloids
47.
poor conductor
a)
metal
b)
nonmetal
c)
metalloids
48.

conduct electricity

a)

metal

b)

nonmetal

c)

metalloids

49.

Elizabeth was examining elements and their physical properties. She described an element is her science journal as having no shine, an insulator, and very brittle. What would this element be a metal, nonmetal, or metalloid?

a)

metal

b)

nonmetal

c)

metalloid

50.

True or False: Diamond is the hardest mineral.

a)

True

b)

False

51.

True or False:

Talc is the harder than topaz.

a)

True

b)

False

52.

Do most Cell phones and computers use...

a)

Conductor

b)

Insalator

c)

Semi-Conductor

53.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
54.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
55.

True or False: Compounds are found on the periodic table.

a)

True

b)

False

56.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
57.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
58.
Diamond has a hardness of ___ on Mohs Hardness Scale.
a)
1
b)
5
c)
8
d)
10

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