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WorksheetsAtoms
Total questions: 25
Worksheet time: 22mins
Name
Class
Date
1.
All matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
2.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
3.
The central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
4.
An atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
5.
True or False? Neutrons have a negative charge
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.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
8.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
9.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
10.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
11.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
12.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
13.
If an atom has 3 electrons, how many protons does it have?
a)
1
b)
2
c)
4
d)
3
14.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
15.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
16.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
17.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
18.
Matter always has mass.
a)
true
b)
false
19.
What charge does an Electron have?
a)
Negative
b)
Positive
c)
Neutral
d)
Complicated
20.
Anything that has mass and takes up space is called
a)
heterogeneous
b)
homogeneous
c)
matter
d)
density
21.
What subatomic particle is electrically neutral (no charge)?
a)
Proton
b)
Ion
c)
Neutron
d)
Electron
22.
Compounds are made of two or more elements.
a)
True
b)
False
23.
What particle uniquely identifies an element?
a)
Number of Valence Electrons
b)
Number of Protons
c)
Number of Electrons
d)
Atomic Mass
24.
Which one of these is NOT located in the element square on the Periodic Table?
a)
Atomic Number
b)
Atomic Mass
c)
Room Temperature
d)
Chemical Symbol
25.
Who is known for an atom model that uses shells for electron configuration?
a)
Mendal
b)
Bohr
c)
van Leewenhoek
d)
Reagan
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