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WorksheetsAtoms, Elements and Compounds Test Review
Total questions: 34
Worksheet time: 39mins
Name
Class
Date
1.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
2.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
3.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
4.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
5.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
6.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
7.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
8.
Which of the following is a subatomic particle with no charge that is found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
9.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
10.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
11.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
12.
How many elements are in HHe
a)
3
b)
4
c)
2
d)
5
13.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
14.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
15.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
16.
A _____________ is a substance that is made of 2 or more elements that are chemically combined.
a)
atom
b)
cell
c)
element
d)
compound
17.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
18.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
19.
Is bleaching your hair a physical or chemical change?
a)
physical
b)
chemical
20.
How many TOTAL atoms are in the compound CaCO3?
a)
3
b)
5
c)
6
d)
4
21.
How many TOTAL atoms are on the compound 2NH3?
a)
5
b)
8
c)
6
d)
4
22.
In the compound 3H2O, the number 2 represents a __.
a)
Subscript
b)
Coefficient
c)
Reactant
d)
Product
23.
In the compound 3 H2O, the 3 represents the ___.
a)
Subscript
b)
Coefficient
c)
Product
d)
Reactant
24.
In the chemical equation
2H2 + O2 --> 2H2O
what does the 2H2O represent?
2H2 + O2 --> 2H2O
what does the 2H2O represent?
a)
subscipt
b)
coefficent
c)
Reactant
d)
Product
25.
In the chemical equation
2H2 + O2 --> 2H2O
what does the arrow (-->) represent?
2H2 + O2 --> 2H2O
what does the arrow (-->) represent?
a)
yields
b)
equals
c)
the product of
d)
the difference between
26.
What equation should be written for the picture above?
a)
Cu2 + 2O --> Cu2O2
b)
2Cu + 2O --> 2CuO
c)
2Cu + O2 -->2CuO
d)
Cu2+ 2O --> 2Cu2O2
27.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
28.
What is the chemical symbol for salt?
a)
NaCl
b)
H20
c)
Fe
d)
Sa
29.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
30.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
31.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
32.
What is water?
a)
element
b)
compound
c)
mixture
33.
What element is found in all four areas of the earth that we studied?
a)
Sodium (Na)
b)
Oxygen (O)
c)
Carbon (C)
d)
Nitrogen (N)
34.
What is the most abundant element found in the earth's atmosphere?
a)
Oxygen
b)
Sulfur
c)
Nitrogen
d)
Argon
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