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WorksheetsAtoms, Isotopes and Ions
Total questions: 16
Worksheet time: 15mins
Name
Class
Date
1.
Two atoms of different elements will definitely have different numbers_____
a)
Nuclei
b)
Protons
c)
Neutrons
d)
Electrons
2.
Which particle is NOT made up of quarks?
a)
Protons
b)
Neutron
c)
Electron
3.
Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its average atomic mass is 12.01 because
a)
Carbon-12 is the heaviest isotope
b)
Carbon-12 is the most useful to humans
c)
Carbon-12 is the most common isotope
4.
An ion forms when an atom gains or loses
a)
Protons
b)
Neutrons
c)
Electrons
5.
A neutral atom would become an ion that has a charge of 2+ by
a)
Losing two protons
b)
Losing two neutrons
c)
Losing two electrons
6.
An alpha particle consists of
a)
Energy only
b)
1 high-energy electron
c)
1 proton and 1 electron
d)
2 protons and 2 neutrons
7.
Isotopes are atoms that have different
a)
Mass numbers
b)
Element names
c)
Atomic Numbers
8.
A positively charged ion is formed when
a)
A neutron is lost
b)
An electron is lost
c)
A neutron is gained
d)
An electron is gained
9.
Two atoms that have different numbers of protons are
a)
Different ions
b)
Different isotopes
c)
Different elements
10.
If neutral copper atom (atomic number 29) becomes an ion that has a charge of 2+, how many electrons does the resulting ion have?
a)
27
b)
28
c)
29
d)
31
11.
Two neutral atoms that have the same atomic number and different mass numbers are
a)
Ions
b)
Isotopes
c)
Alpha particles
d)
Different elements
12.
Which phrase describes two atoms that are isotopes
a)
Same mass number, same atomic number
b)
Same mass number, different atomic number
c)
Different mass number, same atomic number
d)
Different mass number, different atomic number
13.
An ion that has a negative charge is formed when an atom
a)
Loses neutrons
b)
Loses electrons
c)
Gains neutrons
d)
Gains electrons
14.
What information would allow you to determine whether two atoms are of the same or different elements
a)
The charge on each atom
b)
The number of neutrons each has
c)
The number of protons in their nuclei
d)
The location of the electrons in their electron clouds
15.
Define Atom
a)
It is the smallest piece of an element that still represents that element
b)
Is an element has the electrons in their electron cloud
c)
A positively charged isotope
16.
How are Protons and Neutrons similar
a)
Both are in the nucleus of the atom and they both have the relative mass of 1
b)
They both have alpha particles and have the relative mass of 2
c)
They both have 1 high-energy electron and different elements
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