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Chemistry Unit Review
Test Description: Chemistry covering from Tools of Measurement to Physical Chemical Changes
Instructions: Answer all questions to get your test result.
1) All matter is made of extremely small particles called ______________.
A
molecules
B
elements
C
atoms
D
compounds
2) At the center of every atom lies a small, dense ______________ that is positively charged.
A
nucleus
B
neutron
C
electron
D
orbital cloud
3) Neon is a _________________.
A
metal
B
nonmetal
C
transition metal
D
metalloid
4) Elements in the same family have _______________________.
A
different properties
B
similar properties
C
nothing in common
D
adhesive properties
5) What are the vertical columns in the periodic table called?
A
both A and B
B
families
C
periods
D
groups
6) How would sugar be classified?
A
element
B
compound
C
mixture
7) Suppose your teacher has a container filled with iron and rocks. Your teacher uses a magnet to separate the iron form the rocks. The original container of iron and sand could be called a ______________________________.
A
mixture
B
solution
C
chemical compound
8) The three main categories of elements on the periodic table are __________,_____________and ____________.
A
metals, nonmetals, and metalloids
B
pure substances, compounds, and mixtures
C
alloys, nonmetals, and metalloids
9) With litums paper, what color represents a base?
A
White
B
Red
C
Blue
10) _____________ and _____________ have about the same mass and are found in the nucleus of an atom.
A
Neutrons and Electrons
B
Electrons and Protons
C
Protons and Neutrons
11) Within the atom, there are three subatomic particles called protons, newton, and orbital rings.
A
false
B
true
12) Phenolthalein becomes what color in an acid?
A
clear
B
magenta (pink)
C
red
D
blue
13) Which pH number indicates a strong base?
A
pH13
B
pH7
C
pH 0
D
pH8
14) A burning match is what type of change?
A
Physical
B
Chemical
15) Melting ice is what type of change?
A
Physical
B
Chemical
16) Which substance is the strongest acid?
A
Saliva with a pH 6
B
Lemon Juice with a pH 2
C
NaOH with a pH 10
D
Blood with a pH 8
17) Which of the following is the strongest base?
A
Blood with a pH 8
B
Bleach with a pH 9
C
saliva with a pH 6
D
NaOH with a pH 10
18) Which is a chemical change?
A
dissolving salt in water
B
iron rusting
C
boiling water
D
melting ice
19) There are how many Hydrogen atoms in C6H12O5?
A
5
B
6
C
12
20) Which is a physical change?
A
tearing paper
B
digesting food
C
iron rusting
D
burning coal
*select an answer for all questions
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