WorksheetsChemistry Warm-up #4
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
How are electrons arranged in an atom?
a)
In groups of five
b)
In energy levels
c)
By color
d)
By shape
2.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
3.
How many electrons are in the outer (valence) shell of Chlorine (Cl)?
a)
1
b)
3
c)
6
d)
7
4.
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
5.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
6.
?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
7.
What is the atomic number of this element?
a)
17
b)
18
c)
35
d)
35.453
8.
How many electrons can go in the first energy level?
a)
2
b)
8
c)
18
d)
32
9.
How many electrons can go in the Second energy level?
a)
2
b)
8
c)
18
d)
32
10.
Which particles change the charge in atoms when ions are formed?
a)
Protons
b)
Electrons
c)
Neutrons
11.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
12.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
13.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
14.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
15.
True or False: An isotope is when the protons and neutrons are the same, but the electrons are different.
a)
True
b)
False
16.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
17.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
18.
An element has the mass number 12 and atomic number 6. The number of neutrons in it is:
a)
6
b)
10
c)
4
d)
8
19.
Atoms of the same element which have a different number of neutrons are called _________________.
a)
ions
b)
isotopes
c)
quarks
d)
molecules
20.
The mass number of an element that has 18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
100 %
