WorksheetsGMAS Atomic Structure Pure Substances and Mixtures
Total questions: 42
Worksheet time: 29mins
Name
Class
Date
1.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
2.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
3.
Which subatomic particle has a negative (-) charge?
a)
Proton
b)
Electron
c)
Neutron
4.
Which subatomic particle has a neutral or no charge?
a)
Proton
b)
Electron
c)
Neutron
5.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
6.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
7.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
8.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
9.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
10.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
11.
The particles of the atom you can find by knowing the atomic number.
a)
neutrons
b)
protons and electrons
c)
protons and neutrons
d)
atomic mass
12.
What is the atomic mass of the atom pictured?
a)
9
b)
10
c)
18
d)
19
13.
What is the atomic number of the atom pictured?
a)
9
b)
10
c)
18
d)
19
14.
What is the element name of the atom pictured?
a)
Fluorine
b)
Neon
c)
Argon
d)
Potassium
15.
What is an atom mostly made up of?
a)
protons
b)
electrons
c)
empty space
d)
neutrons
16.
What are the building blocks of matter?
a)
Matter
b)
Atom
c)
Molecule
d)
Element
17.
What is a pure substance that cannot be broken down?
a)
matter
b)
atom
c)
molecule
d)
element
18.
What do the following properties describe? : shiny, ductile, good conductor, high melting point
a)
metal
b)
nonmetal
c)
metalloid
19.
Which is an example of a heterogeneous mixture?
a)
Ice Cream
b)
Salt Water
c)
Salad
d)
Lemonade
20.
Which is an example of a homogeneous mixture?
a)
Ice Cream
b)
Salad
c)
Soup
d)
Soil
21.
Which element is located at Period 7, Group 4?
a)
Maganese
b)
Chlorine
c)
Rutherfordium
d)
Iodine
22.
Elements in the periodic table are arranged in order by their ...
a)
atomic number
b)
atomic mass (mass number)
c)
metal, nonmetal, or metalloid properties
23.
How many proton are in this element?
a)
238
b)
92
c)
146
24.
How many electrons are in this element?
a)
238
b)
92
c)
146
25.
How many neutrons are in this element?
a)
238
b)
92
c)
146
26.
Which of the following describes a compound?
a)
Can easily be separated
b)
Chemically combined
c)
Not chemically combined
d)
Has two different types: homogeneous and heterogeneous
27.
Which of the following describes a mixture?
a)
Chemically combined
b)
Very difficult and often times impossible to seperate
c)
a chemical reaction takes place
d)
Not chemically combined
28.
a)
element
b)
compound
c)
mixture
d)
mixture of elements
29.
a)
Element
b)
Compound
c)
Mixture of elements
d)
Mixture of elements and compounds
30.
a)
Element
b)
Compound
c)
Mixture of elements
d)
Mixture of elements and compounds
31.
a)
Element
b)
Compounds
c)
Mixture of elements
d)
Mixture of compounds
32.
a)
Element
b)
Compound
c)
Mixture of elements
d)
Mixture of elements and compounds
33.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
34.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
35.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
36.
In general, metals are _____.
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity
d)
good conductors of heat
37.
What is H2SO4
made up of?
made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
38.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
39.
How many valence electrons?
a)
2
b)
3
c)
5
d)
10
40.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
41.
On the periodic table, Groups are
a)
Horizontal rows
b)
Vertical columns
42.
On the periodic table, Periods are
a)
Horizontal rows
b)
Vertical columns
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