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WorksheetsAtoms and Elements
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
Whose theory says that matter is made up of tiny particles that cannot be divided?
a)
Aristotle
b)
John Dalton
c)
Mendeleev
d)
Democritus
2.
Who said that matter is not made up of tiny particles?
a)
Aristotle
b)
Democritus
c)
Mendeleev
d)
Bohr
3.
Who developed the atomic theory that says matter is made up of tiny particles called atoms?
a)
Aristotle
b)
Democritus
c)
John Dalton
d)
Bohr
4.
What do you call the middle of an atom?
a)
proton
b)
neutron
c)
electron
d)
nucleus
5.
What do you call a subatomic particle that has a negative charge?
a)
proton
b)
neutron
c)
electron
d)
nucleus
6.
What kind of charge does a neutron have?
a)
positive
b)
negative
c)
neutral
d)
changing
7.
What do you call the positively charged subatomic particle that is found inside the nucleus?
a)
proton
b)
neutron
c)
electron
d)
atom
8.
What can be found inside the nucleus of an atom?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
just electrons
9.
When two or more atoms share electrons, what do you call the joined atoms?
a)
element
b)
compound
c)
molecule
d)
atom
10.
What do you call the smallest unit of an element with all the properties of that element?
a)
proton
b)
electron
c)
atom
d)
molecule
11.
What do you call a substance made of only one kind of atom?
a)
element
b)
compound
c)
molecule
d)
alloy
12.
On the Periodic Table, how are elements arranged?
a)
number of electrons
b)
number of atoms
c)
similar properties
d)
alphabetically
13.
When two or more different kinds of elements are combined, what is formed?
a)
molecule
b)
atom
c)
compound
d)
alloy
14.
What two types of subatomic particles are attracted to each other?
a)
protons and neutrons
b)
electrons and neutrons
c)
protons and electrons
d)
electrons and nucleus
15.
The atomic number of an elements tells you how many ______________ are in the nucleus of one atom of that element.
a)
electrons
b)
protons
c)
neutrons
d)
protons and neutrons
16.
Which of the following is not a property of metals?
a)
conductors
b)
malleable
c)
ductile
d)
insulators
17.
Hydrogen has an atomic mass of 1, which means it has how many subatomic particles in its nucleus?
a)
one
b)
two
c)
four
d)
none
18.
What is another name for the orbit in which electrons travel around the nucleus of an atom?
a)
neutron path
b)
energy level
c)
ring
d)
molecule path
19.
The common chemical compound of water is made up of hydrogen and oxygen. How many total atoms make up one molecule of water?
a)
one
b)
two
c)
three
d)
four
20.
The number of protons in an atom is equal to the number of ________________ in an atom.
a)
neutrons
b)
electons
c)
molecules
d)
compounds
21.
Each element on the Periodic Table always has the same number of ____________________.
a)
subatomic particles
b)
molecules
c)
alloys
d)
compounds
22.
To find the number of neutrons in an element, you must _____________ the number of protons from the atomic weight.
a)
add
b)
subtract
c)
multiply
d)
divide
23.
Which of the following is not a good conductor of heat?
a)
metal
b)
metalloid
c)
plastic
d)
alloy
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