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4.2 Chemistry Unit Review - Short version

Total questions: 58

Worksheet time: 53mins

Name
Class
Date
1.

Which elements are shiny?

a)

metals only

b)

nonmetals only

c)

metals and nonmetals

d)

metals and MAYBE metalloids

2.

Which elements are to the right of the zig zag?

a)

metals

b)

nonmetals

c)

metalloids

3.

You discovered in the lab that silicon is:

a)

metal

b)

metalloid

c)

nonmetal

4.

Which of these was NOT a conductor?

a)

sulfur

b)

magnesium

c)

zinc

d)

aluminum

5.

Substances that can be hammered into thin sheets are:

a)

metals

b)

nonmetals

c)

both metals and nonmetals

6.

The darkest shaded area on the periodic table is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Elements

7.

The lightest shaded area on the periodic table is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Metals

8.

The gray staircase is known as-

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Rare Earth Metals

9.

The substances listed on the right side of a chemical equation are the

a)

Yields

b)

Reactants

c)

Products

d)

Precipitates

10.

------ are poor conductors of heat and electricity

a)

Transition metals

b)

All metals

c)

Non metals

d)

Copper

11.

Boron is an example of

a)

Metalloid

b)

Metal

c)

Non metal

d)

Inert gas

12.

The is family has properties of both metals and nonmetals.

a)

Alkali

b)

Halogens

c)

Nonmetals

d)

Metalloids

13.

This type of element is dull, brittle solids and gases, insulators, poor conductors of heat and electricity, as well as having low melting points.

a)

metals

b)

metalloids

c)

nonmetals

14.

Sulfur is a...

a)

metal

b)

nonmetal

c)

metalloid

15.
Which is a metal?
a)
Rhodium (Rh)
b)
Arsenic (As)
c)
Hydrogen
d)
Argon (Ar)
16.

Which of the following best describes metalloids?

a)

Elements that are always gases

b)

Elements that have properties of both metals and nonmetals

c)

Elements that are only found in compounds

d)

Elements that are always shiny and malleable

17.

Scandium is silver, metallic, soft and ductile when mixed with other metals, never found in large amounts, and found mixed with other elements. Used in alloys for sports equipment, aerospace applications, and fuel cells. Based on these properties, scandium would be classified as a– 

a)

Metal

b)

Metalloid

c)

Nonmeta

d)

Rare Earth Element

18.

Rare earth elements are found in small amounts, mixed with other elements

a)

True

b)

False

19.

Rare earth elements are used in many technologies, such as smartphones, digital cameras, and flat-screen TVs

a)

True

b)

False

20.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
21.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
22.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
23.
The law of conservation of matter states that
a)
chemical reactions change matter.
b)
in chemical reactions, the identity of reactants and products is conserved.
c)
atoms are neither created nor destroyed in chemical reactions.
d)
a chemical equation must be balanced.
24.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
25.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced
26.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
27.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
28.

Which of the following would be evidence that a chemical change took place?

Click all that apply.

a)

A solid melts at 200oC

b)

A precipitate is formed

c)

A rock breaks in half

d)

Sugar Dissolves in Kool-Aid

e)

Light and heat are produced when a log burns

29.

Which of the following substances CANNOT be broken down into simpler substance? ?

a)

NaNa  

b)

H2OH_2O  

c)

C6H12O6C_6H_{12}O_6  

d)

COCO  

30.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
31.
Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?
a)
50 g
b)
100 g
c)
200 g
d)
400 g
32.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
33.
Is water melting a physical or chemical change?
a)
Physical
b)
Chemical
34.
Is digesting your food a physical or chemical change?
a)
Physical
b)
Chemical
35.
Is a burning candle a physical or chemical change?
a)
Physical
b)
Chemical
36.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
37.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
38.
Fizzing, foaming, and burning are all examples of
a)
Chemical change
b)
Physical change
39.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
40.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
41.

Surface tension is the property of water in which...

a)

water molecules at the surface tend to stick together.

b)

water spills easily.

c)

water tends to be see-through.

42.

Describe COHESION.

a)

Water molecules attracted to other substances.

b)

Water molecules climbing upwards against the force of gravity.

c)

Water molecules dissolving many substances because of its polarity.

d)

Water molecules attracted to other water molecules.

43.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
44.
Water droplets take a spherical shape (as pictured) because of ____________
a)
adhesion
b)
cohesion
c)
capillary action
d)
solubility
45.
Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
a)
adhesion
b)
surface tension
c)
solvent properties
d)
nonpolar
46.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)

1-10

47.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
48.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
49.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
50.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are Bases

b)

Both of the solution are Acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an Acid.

51.
On the pH scale higher numbers indicate
a)
acids
b)
bases
52.

Which of the following is the strongest acid?

a)

1

b)

5

c)

3

d)

8

53.

Which of the following is the strongest base?

a)

4

b)

14

c)

7

d)

15

54.

Which of the following would be considered a Homogeneous mixture?

a)

Sweet Tea

b)

Vegetable soup

c)

Caesar salad

d)

Mud

55.

Which of the following would be considered a Heterogeneous mixture?

a)

Trail Mix

b)

Oxygen

c)

Air

d)

Pure, Distilled Water

56.

What is the definition of a mixture?

a)

2+ different substances physically combined

b)

2+ different elements chemically combined

c)

matter with a uniform and definite composition

57.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

58.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

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