NEW
Font size
S
M
L
XL
WorksheetsAtoms
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
2.
An atom's mass number equals the number of...
a)
protons plus the number of electrons
b)
protons plus the number of neutrons
c)
protons
d)
neutrons
3.
Which statement about the atomic nucleus is correct?
a)
The nucleus is made of protons and neutrons and has a negative charge
b)
The nucleus is made of protons and neutrons and has a positive charge
c)
The nucleus is made of electrons and has a positive charge
d)
The nucleus is made of electrons and has a negative charge
4.
Which statement best describes an electron?
a)
Smaller mass than a proton and a negative charge
b)
Smaller mass than a proton and a positive charge
c)
Greater mass than a proton and a negative charge
d)
Greater mass than a proton and a positive charge
5.
Atomic number is equal to the number of electrons in an atom.
a)
true
b)
false
6.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
7.
True or False? Isotopes are atoms of the same element that differ in mass number and number of neutrons
a)
True
b)
False
8.
The number of protons in an atom identifies it as an atom of a paticular element.
a)
true
b)
false
9.
Most atoms have either a positive or a negative charge.
a)
true
b)
false
10.
Atoms of the same element with the same number of protons but different numbers of neutrons.
a)
carbon
b)
electron
c)
isotoners
d)
isotope
11.
Number of protons in the nucleus of the atom (usually also the number of electrons).
a)
Atomic Mass
b)
Atomic Number
c)
Name
d)
Atomic Symbol
12.
Each box on the periodic table represents each different known?
a)
Element
b)
Molecules
c)
Compound
13.
The three categories of elements found on the periodic table are metals, nonmetals and?
a)
Gases
b)
Metalloids
c)
Solids
d)
Liquids
14.
The metalloids are found on the what?
a)
Stairsteps
b)
4th period
c)
At the bottom
d)
In the middle
15.
The noble gases have how many valence electrons?
a)
1
b)
8
16.
The first column on the periodic table is called?
a)
alkali metals
b)
halogens
c)
noble gases
d)
transition metals
17.
Horizontal rows on the periodic table are called?
a)
columns
b)
periods
18.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
19.
Which statement is true about oxygen-17 and oxygen-18?
a)
They do not have the same number of protons.
b)
Their atoms have an identical mass.
c)
They are isotopes of oxygen.
d)
The have the same mass number.
20.
Which of the 4 major groups is the largest? (4.4)
a)
Metals
b)
Semimetals
c)
Nonmetals
d)
Inert/Noble Gases
21.
Which particle is represented by the atomic number? (4.2)
a)
Protons
b)
Neutrons
c)
Electrons
22.
The elements in this group have 5 valence electrons and include elements N, P, and As.
a)
Group 5
b)
Group 1
c)
Group 18
d)
Group 15
23.
The elements in this group only have 1 valence electron and include Li, Na, and K.
a)
Group 11
b)
Group 1
c)
Group 3
24.
The elements in this group have 7 valence electrons and include elements such as F, Cl, and I.
a)
Group 1
b)
Group 7
c)
Group 17
25.
What is the atomic number for an element with twelve protons?
a)
2
b)
12
c)
24
d)
6
Reset
