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Unit 7 - Properties and Changes Test Review

Total questions: 55

Worksheet time: 28mins

Name
Class
Date
1.

What does the term "luster" refer to when classifying materials?

a)

The ability of a material to be stretched into a wire

b)

The ability of a material to conduct electricity

c)

The way a material reflects light from its surface

d)

The ability of a material to be hammered into thin sheets

2.

Which property is associated with a material's ability to be hammered into thin sheets without breaking?

a)

Luster

b)

Ductility

c)

Malleability

d)

Conductivity

3.

What is a conductor?

a)

A material that does not conduct electricity well

b)

A material that reflects light very well

c)

A material that can be easily stretched into a wire

d)

A material that conducts electricity well

4.

What is an insulator?

a)

A material that conducts electricity well

b)

A material that does not conduct electricity well

c)

A material that can be hammered into thin sheets

d)

A material that has a shiny appearance

5.

How would you classify a substance that is silvery and shiny, bends easily in your hands, and can cause a light bulb to light up when placed in a circuit?

a)

metal

b)

nonmetal

c)

metalloid

6.

How would you classify a substance that is dark in color but shiny, conducts electricity only at very high temperatures, and shatters when struck with a hammer?

a)

metal

b)

nonmetal

c)

metalloid

7.

How would you classify a substance that is dull and dark in color, does not conduct electricity well, and shatters when struck with a hammer?

a)

metal

b)

nonmetal

c)

metalloid

8.

What term is used to describe the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change?

a)

Physical reaction

b)

Chemical reaction

c)

Precipitation

d)

Chemical change

9.

Which of the following is an example of a chemical change?

a)

Melting snowman

b)

Breaking a pencil

c)

Baking cookies

d)

Cutting an apple

10.

Which of the following is not evidence that a chemical reaction has taken place?

a)

Production of a gas

b)

Change in temperature

c)

Production of a precipitate

d)

Change in shape

11.
________ are good conductors of electricity; they are often shiny solids at room temperature.
a)
Non-metals
b)
Metalloids
c)
Metals
d)
Noble gases
12.

Which of these is a physical property of an object?

a)

Texture

b)

Color

c)

Shape

d)

All of the above

13.

Substances that can be hammered into thin sheets are:

a)

metals

b)

nonmetals

c)

both metals and nonmetals

14.
If a student observes a silvery solid that is malleable, good conductor, and ductile it is a...
a)
nonmetal 
b)
metal 
c)
metalloid
15.
What does luster mean?
a)
Breaks into pieces
b)
can be hammered into thin sheets
c)
No shine
d)
reflects light, shiny 
16.

Sulfur is considered:

a)

malleable

b)

brittle

c)

ductile

d)

a good conductor

17.
An element has properties of BOTH metals and nonmetals. WHERE would it be found in the periodic table? 
a)
To the right 
b)
To the left 
c)
on the zig zag line
18.

An element is shiny, malleable, and conducts electricity. WHERE would it be found in the periodic table? 

a)
To the right 
b)
To the left 
c)
on the zig zag line
19.

An element is dull, brittle, and a poor conductor. WHERE would it be found in the periodic table? 

a)
To the right 
b)
To the left 
c)
on the zig zag line
20.
What physical property is pictured?
a)
Malleability
b)
Ductility
c)
Solubility
d)
Conductivity
21.

A property of matter that involves hammering a substance into thin sheets.

a)

solubility

b)

state

c)

malleability

d)

density

22.

Which of the following is a physical characteristic of a metalloid?

a)

texture

b)

malleable

c)

semi-conductor

23.

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
24.

Using the table above, what can you infer about this element?

a)

It is most likely a liquid metal.

b)

It is most likely a solid metal.

c)

It is a metalloid.

d)

It is a non-metal.

25.

Find Sodium (Na) on the periodic table. How is it classified?

a)

Metal

b)

Nonmetal

c)

Metalloid

26.

Hydrogen (H) is a gas. How is it classified?

a)

Metal

b)

Nonmetal

c)

Metalloid

27.

Which Physical property do most metals share?

a)

Low melting point

b)

Malleable

c)

Brittle

d)

Poor conductor of heat and electricity

28.

Nonmetals are found on the_________of the periodic table

a)

left side

b)

right side

c)

the zigzag line

d)

bottom

29.

The elements along the staircase are called

a)

metals

b)

nonmetals

c)

metalloids

d)

noble gases

30.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic
31.
John was observing the physical properties of elements in order to classify them as either a metal, nonmetal, or metalloid. The first element was dull, brittle, and did not conduct heat. What would its classification be? 
a)
metal 
b)
nonmetal 
c)
metalloid
32.
The table shows the properties of four elements. Which element in the table is classified as a metal?
a)
Manganese
b)
Sulfur
c)
Silicon
d)
Neon
33.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
34.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
35.

When adding baking soda and vinegar together, it fizzes and bubbles. Why?

a)

A new substance, CO2 is formed.

b)

A physical change takes place.

c)

Vinegar has gas bubbles inside.

d)

We are boiling the baking soda.

36.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
37.
What is the evidence of the chemical change seen here?
a)

precipitate formed

b)

light produced

c)
state change
d)

bubbles released

38.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)

a solution getting hotter

d)

crystals dissolving

39.
When two substances are mixed, they might form a new substance.  Which of the following would indicate that a new substance has been formed?
a)
The temperature of the mixture decreases.
b)
The volume of the mixture increases.
c)
The mass of the mixture increases.
d)
One of the substances dissolves.
40.
All of the following are evidence of a chemical change EXCEPT-
a)
change in state of matter
b)
formation of a gas
c)
color change
d)
precipitate forms
41.
Rust on an iron bar is an example of chemical change.
a)
True 
b)
False
42.
Which is a chemical change?
a)
freezing fruit juice
b)
slicing a potato
c)
boiling water
d)
copper metal turning green
43.

What is the difference between a chemical change and a physical change?

a)

A physical change creates a new substance, a chemical change does not.

b)

A chemical change creates a new substance, a physical change does not.

c)

A chemical change makes the substance look different but a physical change does not.

d)

A physical change makes the substance change color where a chemical change does not.

44.
On a camping trip, Mrs. Benavides roasts a marshmallow in the campfire. She notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place, and how does Mrs. Benavides know?
a)
a chemical change because the marshmallow changed in taste, color and smell
b)
no change because the marshmallow is not a new substance
c)
only a physical change because the marshmallow changed in size
d)
a chemical change because the marshmallow only changed in pH level
45.
Which shows evidence that a chemical change has occurred?
a)
slicing potato
b)
apple/potato turns brown
c)
biting apple
d)
peeling apple/potato
46.
Which of the following is an example that includes evidence of a chemical reaction?
a)
A sample of zinc is placed in water and it settles to the bottom
b)
A solid block of ice is heated and it completely melts into a liquid. 
c)
Sugar that is burned gives off an odor and turns brown and then black.
d)
A tomato is placed into a blender and chopped up into smaller pieces.
47.
A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?
a)
The level of the substance in the beaker is higher after the other liquid is added.
b)
A yellow solid forms and then settles to the bottom of the beaker.
c)
Small white crystals are left behind in the flask that held the first liquid.
48.

A granular substance is added to a liquid. Which of the following would provide evidence to suggest a chemical change has taken place?

a)

The liquid gives off heat.

b)

The granules dissolve completely.

c)

The volume of the liquid increases.

d)

The granules seem to get smaller.

49.

Which of the following is an example of a precipitate?

a)

liquid evaporating into gas

b)

a solid formed from a frozen liquid

c)

a chunky solid formed from two liquids combining

d)

a liquid solution that contains two substances

50.
A student mixes two clear liquids together. After a few minutes, a white powdery solid can be seen settling on the bottom of the test tube. Which of the following is a conclusion that the student can draw based on these observations? The two clear liquids –
a)
were pure substances before they were mixed.
b)
are toxic and should be handled with extreme caution.
c)
have gone through a chemical change in which a new substance called a precipitate was produced.
d)
have been stored too long and are no longer good.
51.

Bethany had a beaker with a small amount of baking soda. She added a few drops of pickle juice to the baking soda and observed fizzing and bubbling. Based on her observation, which of these can Bethany determine about the new substance formed by mixing the baking soda and pickle juice?

a)

A chemical reaction produced a solid.

b)

A chemical reaction produced a gas.

c)

No chemical reaction took place.

d)

Only a physical change happened.

52.

When two liquids are mixed and a solid forms as a result of a reaction, the solid is called a

a)

nonmetal

b)

metal

c)

element

d)

precipitate

53.
A copper penny turning greenish after a few years is an example of ...
a)
Chemical Change
b)
Physical Change
54.
Hydrogen and sulfur are combined in a chemical reaction.  The product is 
a)
without any properties
b)

a substance that has the same properties

c)
a new substance with different properties
d)

a metal

55.

A student creates a circuit as shown here. For the lightbulb to light up, the wire must be made of a:

a)

metal

b)

nonmetal

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