Font size
S
M
L
XL
WorksheetsElements and Molecules Review
Total questions: 81
Worksheet time: 42mins
Name
Class
Date
1.
Which part of an atom is POSITIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
2.
What part of an atom is NEGATIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
3.
Which part of an atom has no charge?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
4.
What is the name of a single type of atom?
a)
cell
b)
proton
c)
element
d)
atom
5.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
6.
What is the term for combining 2 or more DIFFERENT atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
7.
TRUE OR FALSE:
Every compound is a molecule but not every molecule is a compound.
Every compound is a molecule but not every molecule is a compound.
a)
TRUE
b)
FALSE
8.
What is the picture displayed?
a)
Atom
b)
Element
c)
Molecule
d)
Compound
9.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
10.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
11.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
12.
Are these molecules also compounds?
a)
YES
b)
NO
13.
Are these molecules also compounds?
a)
YES
b)
NO
14.
The element oxygen, represented by the symbol O, is classified as
a)
a pure substance
b)
a compound
c)
a mixture
d)
a solution
15.
What is a compound?
a)
an atom with more electrons than protons
b)
a substance in which the atoms of two or more elements are combined together
c)
an atom with more neutrons than protons
d)
a substance in which the atoms of three or more elements are combined together
16.
The chemical combination of two or more different kinds of atoms in fixed amounts is called a(n)
a)
orbit
b)
compound
c)
mixture
d)
element
17.
Atoms combine to form _______.
a)
electrons
b)
molecules
c)
nuclei
d)
neutrons
18.
Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. Which term best describes carbon dioxide?
a)
atom
b)
mixture
c)
element
d)
compound
19.
What defines a mixture?
a)
described by a chemical formula
b)
can be broken down into its basic substances through physical means
c)
created through a chemical reaction
d)
cannot be broken down into simpler substances
20.
The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe?
a)
compound
b)
liquid
c)
element
d)
mixture
21.
Where are protons and neutrons located?
a)
in the nucleus
b)
in the electron cloud
c)
in the valence shell
22.
The number of protons in an atom
a)
Atomic Number
b)
Atomic Proton
c)
Atomic Neutron
d)
Atomic Mass
23.
A table that shows the elements arranged by their atomic numbers
a)
Periodic Table
b)
Dining Room Table
c)
Wooden Table
d)
Occasional Table
24.
A substance made up of atoms of two or more elements that are chemically combined.
a)
Compound
b)
Element
c)
Atom
d)
Nucleus
25.
What are the basic building blocks for all matter?
a)
atoms
b)
elements
c)
compounds
d)
chemicals
26.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
27.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
28.
A recipe for a chemical substance is called a ________ _________.
a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
29.
H2O2← ?
This number tells the number of atoms present.
This number tells the number of atoms present.
a)
coefficient
b)
molecule
c)
subscript
d)
atom
30.
Anything that has mass and takes up space
a)
atoms
b)
elements
c)
molecules
d)
matter
31.
How many atoms/elements in K?
a)
1
b)
2
c)
3
d)
0
32.
Is K an element or a molecule?
a)
element
b)
molecule
33.
Is NO2 an element or a molecule?
a)
element
b)
molecule
34.
How many atoms/elements are in CaCO3?
a)
3
b)
4
c)
5
d)
6
35.
Is CaCO3 an element or a molecule?
a)
element
b)
molecule
36.
How many atoms/elements are in H3?
a)
1
b)
0
c)
2
d)
3
37.
Is H an element or a molecule?
a)
element
b)
molecule
38.
Molecule or Not? N2
a)
molecule
b)
not a molecule
39.
Molecule or Not? Pb
a)
molecule
b)
not a molecule
40.
Molecule or Not? CaCO
a)
molecule
b)
not a molecule
41.
Molecule or Not? CO
a)
molecule
b)
not a molecule
42.
What is the symbol for hydrogen?
a)
Hy
b)
H
c)
He
d)
Ho
43.
What is the symbol for helium?
a)
Hy
b)
H
c)
He
d)
Ho
44.
What is the symbol for beryllium?
a)
Be
b)
B
c)
Ba
d)
Br
45.
What is the symbol for carbon?
a)
Ca
b)
Cr
c)
Co
d)
C
46.
What is the symbol for nitrogen?
a)
N
b)
Ni
c)
Ne
d)
No
47.
What is the symbol for oxygen?
a)
Ox
b)
O
c)
Og
d)
Oh no
48.
What is the symbol for sodium?
a)
s
b)
So
c)
N
d)
Na
49.
What is the symbol for neon?
a)
N
b)
Ni
c)
Ne
d)
No
50.
What is the symbol for magnesium?
a)
Mg
b)
Ma
c)
M
d)
Mn
51.
What is the symbol for aluminum?
a)
A
b)
Al
c)
Au
d)
Am
52.
What is the symbol for chlorine ?
a)
Cl
b)
C
c)
Co
d)
Ch
53.
What is the symbol for potassium ?
a)
P
b)
K
c)
Po
d)
Ks
54.
What is the symbol for calcium?
a)
Ca
b)
Cr
c)
Co
d)
C
55.
Mercury
a)
Me
b)
Hg
c)
Pb
d)
Sn
56.
Iron
a)
Fe
b)
Ir
c)
On
d)
Li
57.
Copper
a)
Co
b)
Cp
c)
Cr
d)
Cu
58.
Zinc
a)
Zn
b)
Zi
c)
Zc
d)
Ak
59.
Silver
a)
Si
b)
Au
c)
K
d)
Ag
60.
Sn
a)
Aluminum
b)
Tin
c)
Bismuth
d)
Antimony
61.
As
a)
Arsenic
b)
Argon
c)
Astatine
d)
Aslanium
62.
Nitrogen
a)
N
b)
Ni
c)
Nt
d)
Nr
63.
nickel
a)
Nc
b)
N
c)
Nl
d)
Ni
64.
lead
a)
P
b)
L
c)
Pb
d)
Le
65.
Na is the symbol for ____.
a)
helium
b)
sulfur
c)
neon
d)
sodium
66.
Al is the symbol for ____.
a)
silver
b)
gold
c)
aluminum
d)
arsenic
67.
K is the symbol for ____.
a)
phosphorus
b)
calcium
c)
potassium
d)
carbon
68.
Ne is the symbol for __.
a)
sodium
b)
neon
c)
natrium
d)
nickel
69.
Sn is the symbol for ___.
a)
sulfur
b)
selenium
c)
xenon
d)
tin
70.
Pb is the symbol for ____.
a)
platinum
b)
paladium
c)
lead
d)
phosphorus
71.
Au is the symbol for ___.
a)
silver
b)
arsenic
c)
argon
d)
gold
72.
Ti is the symbol for ___.
a)
tin
b)
platinum
c)
titanium
d)
potassium
73.
Ag is the symbol for ____.
a)
gold
b)
arsenic
c)
argon
d)
silver
74.
Zn is the symbol for ____.
a)
xenon
b)
zirconium
c)
zinc
d)
silver
75.
Ga is the symbol for ____
a)
gold
b)
silver
c)
gallium
d)
magnesium
76.
What is the chemical symbol for Chromium?
a)
C
b)
Cr
c)
Co
d)
Ch
77.
What is the chemical symbol for arsenic?
a)
A
b)
Ar
c)
As
d)
Ac
78.
What is the chemical symbol for Krypton?
a)
K
b)
Kr
c)
Kp
d)
Ky
79.
What is the chemical symbol for Tungsten?
a)
Tu
b)
T
c)
Tg
d)
W
80.
When sand and water are combined, they create a ______________.
a)
Solution
b)
Mixture
c)
Solvent
d)
All of the above
81.
Spaghetti and meatballs is an example of a:
a)
compound
b)
element
c)
mixture
d)
molecule
Reset
