Atomic Structure
Periodic Table
Elements
Counting Atoms
Name the element
100
Where are the electrons found in an atom?
In electron shells/clouds/rings on the outside of the nucleus.
100
What direction are groups found
up and down/vertical/colums
100

What is the number of Elements in H2O

2(H,O)
100
How many total atoms? C3H7NO2
13
100
Name the element 20 Protons
What is Calcium?
200
What are the three subatomic particle (small particles) that make up an atom?
Protons and Neutrons make up the nucleus of the atom and the electrons are found outside the nucleus.
200
What is the difference between a group and a period?
Groups form vertical columns and periods are horizontal rows.
200
What is the name of this element Mg
Magnesium
200
How many chlorine atoms? SeOCl2
2
200
Name the element 79 Protons
What is Gold?
300
How many valence electrons does Oxygen (O) have
What is 6 valence electrons
300
What number tells us the mass of an atom
Atomic Mass Number 
300
What are two physical properties of elements that are metals?
 Insulators, Conductors, Shiny, Ductile, Malleable,
300
When you have a subscript after each element, what do you do to count the atoms?
Add all the subscript by the element 
300
Name the element Group 14 Period 5
What is Tin (Sn)?
400
What subatomic particle do we use to identify an atom?
Protons
400
Why are the Noble Gases considered stable?
Each element in the Noble gases has a full outer electron shell.
400
What are group 8 elements called?
Noble Gases
400
The coefficient in front of a compound tells us..
The number of molecules of the compound
400
Name the element Group 2 Period 4
What is Calcium (Ca)?
500
Which element has 2 energy shells/ levels and 6 valence electrons
Flourine
500
What is the most reactive group of metals?
Group 1
500
When Two or more elements combine what do you call it
Compound
500
If a chemical equations follows the law of conservation of mass, it means...
The number of atoms in the reactants and the number of atoms in the products are the equal. The mass of the reactants and the mass of the products are equal.
500
Name the element I am a gas in Group 1
What is Hydrogen (H)?
M
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