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WorksheetsParts of an Atom
Total questions: 25
Worksheet time: 37mins
Name
Class
Date
1.
The positively charged particle in the center of an atom is called the ___.
a)
proton
b)
electron
c)
neutron
d)
quark
2.
The electron has a ___.
a)
negative charge
b)
neutral charge
c)
positive charge
d)
static charge
3.
Where is most of the MASS of an atom located?
a)
In the nucleus
b)
Electron cloud
c)
In the electron
d)
Evenly spread throughout the atom
4.
Which statement correctly describes the relative masses of subatomic particles?
a)
Protons and neutrons have almost equal masses, and electrons have a much smaller mass.
b)
Neutrons and electrons have almost equal masses, and protons have a much larger mass.
c)
Protons, neutrons, and electrons all have roughly the same masses.
d)
Electrons and protons have the same masses, and neutrons have no mass.
5.
Which electrical charge does a neutron have?
a)
neutral
b)
alternating between positive and negative
c)
negative
d)
positive
6.
Which of the following is NOT a type of subatomic particle?
a)
plasmids
b)
proton
c)
neutron
d)
electron
7.
Which two types of atomic particles carry an electrical charge?
a)
protons and electrons
b)
quarks and neutrons
c)
neutrons and electrons
d)
protons and neutrons
8.
What is the correct ordering of these small parts of matter, from the smallest to the largest?
a)
electron < proton < atom
b)
electron < atom < proton
c)
atom < electron < proton
d)
proton < atom < electron
9.
Which two particles are in the atomic nucleus?
a)
protons and neutrons
b)
neutrinos and electrons
c)
neutrons and ions
d)
electrons and protons
10.
The atom has an overall ___.
a)
neutral charge
b)
negative charge
c)
positive charge
d)
static charge
11.
The NUCLEUS of an atom has an overall ___.
a)
positive charge
b)
negative charge
c)
neutral charge
d)
static charge
12.
Which part of the atom accounts for the majority of its volume? (SIZE, not mass)
a)
Electron Cloud
b)
Nucleus
c)
Number of protons
d)
Number of neutrons
13.
The atomic number of an element that has 6 protons and 8 neutrons is ___.
a)
6
b)
2
c)
8
d)
14
14.
What distinguishes each element from all others, and gives it unique physical and chemical properties?
a)
The number of protons
b)
The number of neutrons
c)
The electron configuration
d)
The element's universal origin
15.
What does the atomic number of an element indicate?
a)
the number of protons
b)
the number of orbitals
c)
the number of isotopes
d)
the number of neutrons
16.
What is the correct description of the isotope of oxygen that is atomic number 8 and has a mass of 14?
a)
It has 8 protons, 6 neutrons
b)
It has 14 neutrons, and 6 protons
c)
It has 8 neutrons, and 6 protons
d)
It has 14 protons, and 8 neutrons
17.
Which of the following list the elements in order, from those having the LEAST protons to those having the MOST protons in the atoms?
a)
O, S, Se, Te
b)
Rb, K, Na, Li
c)
Na, S, Al, Cl
d)
O, N, B, Li
18.
Fluorine is atomic number 9, and has a mass of 19. How many electrons would it have?
a)
9
b)
6
c)
19
d)
10
19.
Fluorine is atomic number 9, and has a mass of 19. How many protons would it have?
a)
9
b)
6
c)
19
d)
10
20.
Fluorine is atomic number 9, and has a mass of 19. How many neutrons would it have?
a)
9
b)
6
c)
19
d)
10
21.
If an atom temporarily gains or loses one or more electrons, it is considered a/an ___.
a)
ion
b)
isotope
c)
new element
d)
metalloid
22.
If an atom temporarily gains or loses one or more neutrons, it is considered a/an ___.
a)
ion
b)
isotope
c)
new element
d)
metalloid
23.
If an atom temporarily gains or loses one or more protons, it is considered a/an ___.
a)
ion
b)
isotope
c)
new element
d)
metalloid
24.
What is the symbol for the ion that has 17 protons and 18 electrons?
a)
Cl-
b)
Cl+
c)
Ar+
d)
Ar-
25.
In modern atomic models, where are electrons found?
a)
In an electron cloud
b)
In the nucleus
c)
Between protons and neutrons
d)
Floating freely between atoms
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