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WorksheetsHistory of the Atom, Ions, Isotopes
Total questions: 18
Worksheet time: 10mins
Name
Class
Date
1.
What is an atom mostly made up of?
a)
protons
b)
electrons
c)
empty space
d)
neutrons
2.
Is the nucleus positively or negatively charged?
a)
positively
b)
negatively
3.
What do like charges do?
a)
attract
b)
repel
c)
nothing
4.
What do opposite charges do?
a)
attract
b)
repel
c)
nothing
5.
What was JJ Thomson responsible for finding?
a)
protons
b)
neutrons
c)
nucleus
d)
electrons
6.
What is Niels Bohr responsible for discovering?
a)
That electrons are inside the nucleus
b)
That electrons are in fixed orbits around the nucleus
c)
That electrons are small
d)
That electrons are negative
7.
Ernest Rutherford discovered that the atom was mostly _________________ and has a _______________ charged nucleus.
a)
empty space, positively
b)
empty space, negatively
c)
full of protons, positively
d)
full of neutrons, negatively
8.
John Dalton was wrong when he said that...?
a)
atoms are the building blocks of matter
b)
atoms cannot be created or destroyed
c)
all atoms of the same element are identical
d)
both b & c
9.
JJ Thomson found that the cathode ray tubes were ________________ because they were attracted to the positive side of a magnet.
a)
positive
b)
negative
c)
neutral
10.
Which experiment taught us that atoms are mostly empty space and have a positively charged nucleus?
a)
Plum Pudding Model
b)
Cathode Ray Tube
c)
Gold Foil Experiment
d)
Planetary Model
11.
What would an isotope of Calcium-20 be?
a)
Calcium-22
b)
Calcium-24
c)
Calcium-26
d)
All of the Above
12.
If an atom is charged positively, it has...?
a)
gained protons
b)
lost protons
c)
gained electrons
d)
lost electrons
13.
If an atom has extra neutrons, it is called a?
a)
Isotope
b)
Ion
c)
Cation
d)
Anion
14.
A positively charged atom is called a?
a)
ion
b)
anion
c)
cation
d)
onion
15.
A negatively charged atom is called a?
a)
anion
b)
cation
c)
ion
d)
onion
16.
What is this type of notation called?
a)
Scientific notation
b)
Isotope notation
c)
Ion notation
d)
Element notation
17.
This is a model of what was thought be an atom after what experiment?
a)
Cathode Ray Tube Experiment
b)
Gold Foil Experiment
c)
Plum Pudding Model
d)
Planetary Model
18.
This is a model of what was thought be an atom after what experiment?
a)
Cathode Ray Tube Experiment
b)
Gold Foil Experiment
c)
Plum Pudding Model
d)
Planetary Model
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