WorksheetsAtom History/Structure/Properties & Electron Configuration
Total questions: 40
Worksheet time: 20mins
What is letter A pointing to?
Atomic Number
Atomic Mass
Element Symbol
Element Name
What is letter B pointing to?
Element Name
Atomic Number
Atomic Mass
Element Symbol
What letter C pointing to?
Element Name
Element Symbol
Atomic Number
Atomic Mass
What is letter D pointing to?
Atomic Mass
Atomic Number
Element Name
Element Symbol
A/An _________ is the basic building block of matter.
cell
atom
protein
dna
The idea of an atom was first developed around 460 B.C. by Greek philosopher:
Democritus
JJ Thompson
John Dalton
Ernest Rutherford
In 1805, English chemist __________ proposed and published the theory on atoms.
Democritus
John Dalton
JJ Thompson
Ernest Rutherford
In 1897, English physicist J.J. Thomson discovered the _____.
proton
neutron
electron
particles
Who came up with the plum pudding model?
JJ Thompson
Democritus
John Dalton
Ernest Rutherford
According to __________, an atom is made of a central, positively charged region. He called this region the nucleus.
Rutherford
Democritus
Dalton
Thompson
_______ proved his model of the atom with a famous experiment known as the Gold Foil Experiment.
Dalton
Rutherford
Thompson
Democritus
_____ believed the electrons traveled around the nucleus in circular orbits.
Rutherford
Bohr
Dalton
Thompson
The center region of the atom is called the _____
nucleus
nucleolus
proton
electron
The surrounding area around the nucleus is mostly made up of what?
Empty Space
Filled Space
Neutrons
Electrons
We measure the mass of atoms in:
Amu
Emu
Bmu
Kmu
We measure the size of atoms in:
micometer
picometer
inches
grams
_________ are the particles found within an atom.
atomic particles
subatomic particles
tiny particles
organelles
What can you find in the nucleus of an atom?
protons
protons and neutrons
neutrons and electrons
electrons
Where are the electrons found?
in the nucleus
in the proton
in an orbit around the nucleus
in the air
What charge is the proton?
-1
+1
neutral
What is the mass of 1 proton?
1 amu
0 amu
2 amu
3 amu
What is the mass of 1 electron?
1 amu
2 amu
0 amu
3 amu
What is the mass of 1 neutron?
1 amu
2 amu
0 amu
3 amu
What is the charge of an electron?
-1
+1
0
-2
What is the charge of a neutron?
-1
+1
0
+3
The charge of the nucleus would be positive.
True
False
An ______ is a type of atom with the same number of protons.
electron
atomic mass
element
cell
Electrons orbit the nucleus in specific orbitals or __________ that surround the nucleus.
clouds
space
shells
wells
The shell _____ to the nucleus has the lowest energy.
furthest
closest
in the middle
Electrons in the shell _______ away from the nucleus have the most energy.
closest
in the middle
furthest
What rule do we use in order to create a Bohr diagram?
2-8-8
3-9-9
3-8-8
2-10-8
How electrons are arranged in the shells of an atom is called:
electron subtraction
electron confusion
electron configuration
electron diagram
In general, electrons fill lower shells _____ because lower shells have less energy.
first
last
never
third
We use a __________ to show electron configuration.
Bohr Diagram
Dalton Diagram
Democritus Diagram
Plum Pudding Model
In the middle of a Bohr Diagram, what are the 3 parts you need to include?
symbol, electrons, protons
symbol, neutrons, protons
name, neutrons, protons
name, electrons, protons
How many electrons make the first shell full?/
2
8
18
20
The electrons found in the outermost orbital are called:
Balance Electrons
Valence Electrons
Calence Electrons
Walence Electrons
How many valence electrons does Neon have?
2
8
10
12
How many valence electrons does this Flourine atom have?
9
2
7
10
How many valence electrons does this Magnesium atom have?
1
2
12
8
