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WorksheetsAtoms and the Elements
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is the electrical charge of a proton?
a)
ionic
b)
positive
c)
negative
d)
neutral
2.
Where are the protons and neutrons located in a helium atom?
a)
electron cloud
b)
ion
c)
outer energy level
d)
nucleus
3.
Potassium has an atomic number of 19 and a mass number of 39. How many neutrons are in the nucleus of a typical potassium atom?
a)
19
b)
20
c)
39
d)
58
4.
Which of the following is made of only one kind of atom and cannot be broken down into simpler substances?
a)
a molecule
b)
a compound
c)
an element
d)
a mixture
5.
How are electrons different from both protons and neutrons?
a)
electrons are larger than protons and neutrons
b)
electrons are not found in the nucleus
c)
electrons have no electrical charger
d)
electrons are a different color than protons and neutrons
6.
Most wires for electricity are made out of this metal?
a)
iron
b)
copper
c)
aluminum
d)
mercury
7.
Which of the following correctly describes an important characteristic of an element?
a)
elements are made of different kinds of atoms bonded together
b)
elements are a mixture of different kinds of molecules
c)
elements are made of only one kind of atom
d)
elements are solid, organic substances
8.
How are protons and neutrons different?
a)
protons are in the nucleus, while neutrons orbit the nucleus
b)
neutrons are in the nucleus, while protons orbit the nucleus
c)
protons have a positive charge, while neutrons have a negative charge
d)
protons have a positive charge, while neutrons have no charge
9.
What is the atomic mass of an atom with 5 protons, 5 neutrons, and 5 electrons?
a)
15
b)
10
c)
5
d)
25
10.
Where can electrons be found in an atom?
a)
electrons are located inside the nucleus of an atom
b)
electrons orbit the nucleus of an atom
c)
electrons are distributed evenly inside and around the nucleus of an atom
d)
electrons only exist when they are flowing between atoms
11.
What is the atomic mass of an atom with 4 protons, 5 neutrons, and 4 electrons?
a)
4
b)
5
c)
9
d)
13
12.
An element is composed of only one type of __________.
a)
compound
b)
atomic charge
c)
molecule
d)
atom
13.
Which statement about electrons is true?
a)
electrons are much smaller than protons and neutrons
b)
electrons are located in the nucleus
c)
electrons have a positive electric charge
d)
electrons weigh the most of all the subatomic particles
14.
The atomic number is the number of ______ in the nucleus of an atom.
a)
protons
b)
electrons
c)
both protons and electrons
d)
neither protons nor electrons
15.
An aluminum atom has 13 electrons and 14 neutrons. How many protons does the atom have?
a)
1
b)
13
c)
14
d)
27
16.
How is the periodic table organized?
a)
columns and rows
b)
periods and columns
c)
periods and groups
d)
columns and groups
17.
The smallest part of an element that still has the properties of that element is
a)
a proton
b)
a molecule
c)
an atom
d)
a quark
18.
The nucleus is made of protons and neutrons held together by a strong ________ force.
a)
gravitational
b)
magnetic
c)
nuclear
d)
centrifugal
19.
The nucleus contains both neutrons and positively charged particles called ________.
a)
protons
b)
electrons
c)
neutrons
d)
ions
20.
Which of these is NOT an element?
a)
hydrogen
b)
water
c)
oxygen
d)
krypton
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