WorksheetsMatter, Elements and Atoms Review
Total questions: 24
Worksheet time: 15mins
Name
Class
Date
1.
The smallest particles of an element that still have the element's properties are
a)
quarks
b)
gluons
c)
protons
d)
atoms
2.
Which statement is true about any element?
a)
It has a unique set of properties
b)
It is different from all other elements
c)
It can be identified on the basis of its properties
d)
all of the above
3.
A unique substance that forms when two or more elements combine chemically is a(n)
a)
mixture
b)
colloid
c)
compound
d)
solution
4.
A heterogeneous mixture has the same composition throughout.
a)
true
b)
false
5.
One example of a homogenous mixture is salt dissolving into water.
a)
true
b)
false
6.
The mass number of an atoms is its number of <br />
a)
electrons
b)
protons
c)
neutrons
d)
protons plus neutrons
7.
Which statement is true about the nucleus of an atom?
a)
It makes up most of the atoms mass.
b)
It makes up most of the atom's volume.
c)
It contains protons and electrons.
d)
It is neutral in electric charge.
8.
All protons are exactly the same.
a)
true
b)
false
9.
Electrons have the same mass as protons.
a)
true
b)
false
10.
Which statement is not part of the original atomic theory?
a)
Atoms consist of smaller particles of matter.
b)
Atoms cannot be created or destroyed.
c)
All atoms of the same element have the same mass.
d)
Atoms join together to form compounds.
11.
The scientist who discovered electrons.<br />
a)
Democritus
b)
Thomson
c)
Rutherford
d)
Dalton
12.
The philosopher who first introduced the idea of the atom.
a)
Thomson
b)
Dalton
c)
Rutherford
d)
Democritus
13.
The scientitist who discovered the nucleus of the atom<br />
a)
Rutherford
b)
Chadwick
c)
Thomson<br />
d)
Dalton
14.
The scientist who developed the original atomic theory<br />
a)
Chadwick
b)
Democritus
c)
Dalton
d)
Bohr
15.
The plum pudding model of the atom was proposed by whom?
a)
Rutherford
b)
Chadwick
c)
Bohr
d)
Thomson<br />
16.
Most of Dalton's atomic theory is still accepted today.
a)
true
b)
false
17.
Neutral particles inside the nucleus of an atom are (a)
18.
Negatively charged particles in atoms are
(a)
19.
The atomic number of an atom is its number of (a)
20.
An element with the same number of protons but differing number of neutrons are called
(a)
21.
Based on it's components, what is the electrical charge of an atom's nucleus?
(a)
22.
For an atom to remain neutral, what subatomic particles must remain in balance?
a)
protons and neutrons
b)
neutrons and electrons
c)
protons and electrons
23.
What subatomic particles have the same mass?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
24.
What is the electron capacity of the 3rd shell?
a)
2
b)
8
c)
18
d)
32
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