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WorksheetsCommunity Chem Unit 2 Test Review
Total questions: 18
Worksheet time: 28mins
Name
Class
Date
1.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
2.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
3.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
4.
How many p, e, and n does Hydrogen have?
a)
1 p 1 e 1 n
b)
1 p 1 e 0 n
c)
1 p 1 e 2 n
d)
2 p 2 e 2 n
5.
An ion refers to
a)
Only changing the number of protons
b)
Only changing the number of neutrons
c)
An element that has a charge by only changing the number of electrons
d)
Changing the number of protons or electrons
6.
An isotope refers to
a)
Only changing the number of protons
b)
An element that has a new mass by only changing the number of neutrons
c)
Only changing the number of electrons
d)
Changing the number of protons or neutrons
7.
What particle determines what the element is?
a)
proton
b)
electron
c)
neutron
d)
positron
8.
How many p, e, and n does O+2 have?
a)
16 p 16 e 16 n
b)
8 p 8 e 8 n
c)
8 p 8 e 6 n
d)
8 p 6 e 8 n
9.
How many p, e, and n does Iron have?
a)
26 p 26 e 26 n
b)
53 p 53 e 74 n
c)
26 p 26 e 30 n
d)
53 p 53 e 53 n
10.
How many p, e, and n does Nitrogen-16 have?
a)
14 p 14 e 14 n
b)
7 p 7 e 7 n
c)
7 p 9 e 7 n
d)
7 p 7 e 9 n
11.
What is the atomic mass of Neon from the Periodic Table?
a)
10
b)
20.18
c)
10.18
d)
30.18
12.
How many neutrons does a Hydrogen atom from the Periodic Table have?
a)
1
b)
2
c)
3
d)
0
13.
How many electrons does a Copper atom from the Periodic Table have?
a)
63
b)
29
c)
92
d)
34
14.
In the isotope name, Hydrogen-3, what does the 3 represent?
a)
charge
b)
mass number
c)
atomic number
d)
number of electrons
15.
Which of the following is not a clue that a chemical change has occurred?
a)
The solution begins to bubble
b)
A change in the state of matter
c)
The solution begins to change color
d)
The substance begins to produce a potent odor
16.
Found in the nucleus of the atom
a)
electrons only
b)
protons only
c)
neutrons and protons
d)
neutrons and electrons
17.
What is the charge of the following diagram?
a)
-1
b)
0
c)
+1
d)
+2
18.
What is the mass number of the following diagram?
a)
0
b)
1
c)
2
d)
3
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