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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
atoms
B
compounds
C
molecules
D
elements
2) At the center of every atom lies a small, dense ______________ that is positively charged.
A
electron
B
nucleus
C
neutron
D
orbital cloud
3) Neon is a _________________.
A
metalloid
B
transition metal
C
metal
D
nonmetal
4) Elements in the same family have _______________________.
A
similar properties
B
adhesive properties
C
nothing in common
D
different properties
5) What are the vertical columns in the periodic table called?
A
periods
B
both A and B
C
families
D
groups
6) How would sugar be classified?
A
element
B
mixture
C
compound
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
chemical compound
B
mixture
C
solution
8) The three main categories of elements on the periodic table are __________,_____________and ____________.
A
pure substances, compounds, and mixtures
B
alloys, nonmetals, and metalloids
C
metals, nonmetals, and metalloids
9) With litums paper, what color represents a base?
A
Blue
B
White
C
Red
10) _____________ and _____________ have about the same mass and are found in the nucleus of an atom.
A
Protons and Neutrons
B
Neutrons and Electrons
C
Electrons and Protons
11) Within the atom, there are three subatomic particles called protons, newton, and orbital rings.
A
true
B
false
12) Phenolthalein becomes what color in an acid?
A
blue
B
magenta (pink)
C
clear
D
red
13) Which pH number indicates a strong base?
A
pH8
B
pH7
C
pH 0
D
pH13
14) A burning match is what type of change?
A
Chemical
B
Physical
15) Melting ice is what type of change?
A
Chemical
B
Physical
16) Which substance is the strongest acid?
A
NaOH with a pH 10
B
Blood with a pH 8
C
Lemon Juice with a pH 2
D
Saliva with a pH 6
17) Which of the following is the strongest base?
A
Bleach with a pH 9
B
NaOH with a pH 10
C
Blood with a pH 8
D
saliva with a pH 6
18) Which is a chemical change?
A
iron rusting
B
melting ice
C
boiling water
D
dissolving salt in water
19) There are how many Hydrogen atoms in C6H12O5?
A
6
B
5
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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