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WorksheetsNational 5 Chemistry Unit 1 - Atom and periodic Table
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
Which two subatomic particles are found in the NUCLEUS of at atom?
a)
protons & nuetrons
b)
protons & electrons
c)
neutrons & electrons
d)
electrons & protons
2.
The subatomic particle with a neutral charge is:
a)
protons
b)
electrons
c)
neutrons
d)
cloud
3.
If an element has 6 protons, 7 neutrons, and 6 electrons, what type of charge does the element have?
a)
positive
b)
negative
c)
neutral
d)
imaginary
4.
What gives an atom mass?
a)
Protons & electrons in the nucleus
b)
electrons in the cloud
c)
protons & neutrons in the nucleus
d)
Protons & electrons in the cloud
5.
If an atom has 24 protons and 24 electrons, what is the atomic number of this element?
a)
24
b)
48
c)
0
d)
42
6.
The number of protons is equal to
a)
the atomic number
b)
the number of neutrons
c)
the energy levels
d)
the periodic table groups
7.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
8.
Rows on the periodic table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
9.
What does the H stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
10.
Most elements on the periodic table are classified as ____________.
a)
Gases
b)
Metalloids
c)
Metals
d)
Nonmetals
11.
Which group on the periodic table is the most reactive?
a)
Group 1
b)
Group 2
c)
Group 13
d)
Group 18
12.
What is the chemical symbol for Sodium?
a)
S
b)
So
c)
Na
d)
Ca
13.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
14.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
15.
What is the chemical symbol for Lithium?
a)
H
b)
He
c)
Li
d)
N
16.
The second energy level can hold up to how many electrons?
a)
2
b)
8
c)
10
d)
12
17.
How are elements ordered on the Periodic Table?
a)
Alphabetical Order
b)
By their color.
c)
By their atomic mass.
d)
By their atomic number.
18.
Isotopes of an element have a different number of...
a)
Protons
b)
Neutrons
c)
Electrons
d)
Mass
19.
How many neutrons does a Sodium 24 isotope have?
a)
12
b)
13
c)
14
d)
15
20.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
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