WorksheetsElements and Bohr Models
Total questions: 20
Worksheet time: 14mins
A __________ is a subatomic particle with a positive charge.
proton
neutron
electron
nucleus
This is the location of electrons in an atom.
nucleus
protons
orbitals
neutrons
How many valence (outer) electrons does an Oxygen atom have?
2
6
8
16
A __________ is a subatomic particle with a negative charge.
proton
neutron
electron
nucleus
What is the average atomic mass of Magnesium?
12.011
14.007
22.990
24.305
In the molecule 4CO2, the number "4" is a...
subscript
coefficient
What is the atomic number of this element?
17
18
35
35.453
How many electrons can fit on the 1st energy level (orbital) for any Bohr Model?
2
6
8
10
What is the mass number of this atom of Chlorine?
17
18
35
35.453
In the molecule C6H12O6, how many hydrogen atoms are there?
1
6
12
24
A __________ is a subatomic particle with a neutral charge.
proton
neutron
electron
nucleus
A __________ is a small number that shows the number of atoms in a molecule.
subscript
coefficient
If an atom of Phosphorus has 16 neutrons, what is it's mass number?
15
16
30.974
31
What is the coefficient in 6NO2?
1
2
6
12
If an atom of Fluorine has 10 neutrons, which of the following is FALSE?
The mass number is 19.
There are 10 total electrons.
There are 7 valence electrons.
There are 9 protons.
If an atom of Sodium has a mass number of 23, it will have...
23 protons
11 neutrons
12 protons
12 neutrons
___________ simplify the Bohr Model by showing only the outer valence electrons used for bonding.
Lewis Dot Diagrams
Bohr Models
Electron Clouds
Periodic Tables
How many molecules of H2O are found in 5H2O?
1
2
5
10
Protons + Neutrons =
the average atomic mass
mass number
number of electrons
APE MAN
How many atoms of hydrogen are found in 2NH3?
1
2
3
6
