Atomic Structure
The Element Square
Building the Models
Subatomic Particles
Periodic Table
100
What is the center of the atoms called?
Nucleus
100
What is the atomic number?
8
100
Which two subatomic particles will always have the same number in a neutral atom?
Protons and electrons
100
What charge do protons have?
Positive
100
This element has an atomic number of 82. What is the element?
What is Lead
200
What two particles exist in the nucleus of the atom?
Protons and neutrons
200
What is the atomic mass/weight? Your answer must be rounded.
16
200
How do you calculate how many neutrons are in the atom?
Round the atomic mass/weight to the closest whole number, and then subtract the atomic number
200
What charge do neutrons have?
Neutral or no charge
200
Boron has a mass number of 11 and an atomic number of 5? How many neutrons does it have?
6
300
Where do the electrons live in the atom?
In the shells or orbitals
300
What is the element symbol?
O
300
Which element has an atomic number of 47
Silver
300
What charge do electrons have?
Negative
300
This element has 3 protons. What is its chemical symbol?
What is Li
400
How many electrons does Helium have?
2
400
What is the element name?
Oxygen
400
is the atomic mass found on the top or bottom of the element square?
Bottom
400
The atomic mass/weight is made up of what two subatomic particles?
Protons and neutrons
400
Find the element with the atomic number 12. What is its average atomic mass rounded to the nearest whole number?
24
500
The number of protons in an atom is represented by this in the element square.
Atomic number
500
How many neutrons does Fluorine have? Atomic number is 9 and mass is 19.
10
500
What element has the symbol K?
Potassium
500
Can the number of neutrons be equal to the number of protons and electrons?
Yes
500
An atom has 20 protons, 20 electrons, and 20 neutrons. What is the element name and its mass number?
What is calcium-40