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1st 6 Weeks Science Test Review

Total questions: 38

Worksheet time: 15mins

Name
Class
Date
1.

What kind of changes can only be observed when a substance changes into a different substance?

a)

physical changes

b)

chemical changes

c)

liquid changes

d)

phase changes

2.
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
3.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
4.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
5.

What does a change in the size, shape, or state of matter indicate has taken place?

a)

chemical change

b)

physical change

c)

chemical reaction

d)

electron change

6.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
7.

What is an example of a chemical change?

a)

Ripped paper

b)

boiled egg

c)

cracked egg

d)

sugar dissolving in water

8.

Which is an example of a chemical change?

a)

freezing fruit juice

b)

slicing a potato

c)

boiling water

d)

silver jewelry tarnishing

9.

What is the definition of chemical change?

a)

any change that results in the formation of new chemical substances.

b)

changing clothes

c)

matter cannot be created or destroyed, only change form

d)

changes affecting the appearance of a substance, but it doesn't result in a new substance being formed

10.

A student had a beaker with a small amount of baking soda. The student added some vinegar to the baking soda and observed fizzing and bubbling.

Based on observation, which of these can the student conclude?

a)

A chemical reaction produced a solid.

b)

No chemical reaction took place.

c)

Only a physical change happened.

d)

A chemical reaction produced a gas.

11.

Which example indicates a chemical change has taken place?

a)

the crystals dissolve in water

b)

a piece of wood is chopped into several smaller pieces

c)

there is an increase in temperature when 2 liquids are mixed

d)

when 2 liquids are mixed the volume (amount) increases

12.

Which column in the table includes only chemical changes?

a)

A

b)

B

c)

C

d)

D

13.

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 substances

c)

A small particle made with a specific chemical composition

d)

A collection of atoms that have different abilities when joined together

14.

How many different elements make up the compound sodium bicarbonate (NaHCO3)

a)

2

b)

3

c)

4

d)

5

15.

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

a)

Carbon

b)

Oxygen

c)

Nitrogen

d)

Phosphorus

16.

Look at the following list of substances and their symbols or formulas. How many of these substances are an example of an element?


Bromine (Br)

Water (H2O)

Hydrogen (H)

Nitrous Acid (HNO2)

Tin (Sn)

a)

1

b)

2

c)

3

d)

4

17.

Look at the following list of substances and their symbols or formulas. How many of these substances are an example of a compound?


Bromine (Br)

Water (H2O)

Hydrogen (H)

Nitrous Acid (HNO2)

Tin (Sn)

a)

0

b)

1

c)

2

d)

3

18.

What are the one or two letters called that represent each element on the periodic table?

For example "Xe" represents Xenon and "O" represents oxygen.

a)

chemical formula

b)

chemical name

c)

chemical symbol

d)

compound

19.

Which of the following is a compound?

a)

Water (H2O)

b)

oxygen (O)

c)

Chlorine (Cl)

d)

Aluminum (Al)

20.

A/An ______ is a pure substance represented by a chemical symbol on the periodic table.

a)

Element

b)

Compound

c)

Neither

21.
Malleability is ___________
a)
the way light is reflected off a surface.
b)
how well a piece of matter conducts electricity
c)
A.  the capability of being drawn out into thin wires or threads.
d)
the capability of being hammered out thin.
22.
Luster is ___________
a)
A.  the way light is reflected off a surface.
b)
A.  how well a piece of matter conducts electricity. 
c)
A.  the capability of being drawn out into thin wires or threads.
d)
A.  the capability of being hammered out thin.
23.
Ductility is ___________
a)
A.  the capability of being hammered out thin.  
b)
A.  the way light is reflected off a surface.
c)
A.  the capability of being drawn out into thin wires or threads.
d)
A.  how well a piece of matter conducts electricity. 
24.
Conductivity is ___________
a)
the way light is reflected off a surface.
b)
how well a piece of matter conducts electricity. 
c)
the capability of being hammered out thin
d)
A.  the capability of being drawn out into thin wires or threads.
25.
Metals have all of the following physical properties except __________.
a)
high conductivity
b)
shiny luster
c)
malleable
d)
brittle
26.

Nonmetals are ________ compared to metals.

a)

highly conductive

b)

shiny

c)

ductile

d)

non-conductive

27.
Metalloids _____________
a)
have no properties of metals.
b)
have no properties of nonmetals.
c)
have some properties of both metals and nonmetals.
d)
none of the above
28.
Which of these grouping of elements could have the characteristic of brittle?
a)
Metal
b)
Nonmetal
29.
Which of these grouping of elements could have the characteristic of luster (shiny)?
a)
Metal
b)
Nonmetal
c)
metalloids
d)
Both metals and metalloids
30.

All of the following would classify an element as a metal except?

a)

Dull Luster

b)

Shiny Luster

c)

Malleable

d)

Ductile

31.
Non-metals are good conductors of heat and electricity. 
a)
TRUE
b)
FALSE
32.

Which of the following is the most abundant element in the earth's crust (lithosphere)?

a)

Iron

b)

Potassium

c)

Silicon

d)

Calcium

33.
Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table . Based on these observations, which sample is most likely a nonmetal?
a)
Sample 1
b)
Sample 2
c)
Sample 3
d)
Sample 4
34.

Which of the following is the best description of a compound?

a)

A substance that cannot be broken down into simpler substances

b)

A naturally occurring mineral made of more than one substances

c)

A small particle made with a specific chemical composition

d)

A combination of different elements that are joined chemically and can not be separated

35.

Is this a metal, metalloid, or nonmetal?

a)

Metal

b)

Metalloid

c)

Nonmetal

36.

Is this a metal, metalloid, or nonmetal?

a)

Metal

b)

Metalloid

c)

Nonmetal

37.

Is this a metal, metalloid, or nonmetal?

a)

Metal

b)

Metalloid

c)

Nonmetal

38.

A substance that lets some electricity and heat flow through it, but not as well as a conductor

a)

metals

b)

insulator

c)

conductor

d)

semi-conductor

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