Group 1
Group 2
Group 3
Group 4
Group 5
100
Describe the pattern of the periodic table.
It increases by atomic number
100
The group number tells you what?
How many valence electrons there are.
100
Which direction do the groups go ?
up & down, vertical, column...
100
How do you find the number of electrons?
atomic number
100
Which direction do the periods go?
left & right, horizontally, rows....
200
Where are the most reactive elements located on the periodic table?
Left or group 1
200
What are valence electrons?
the electrons on the outermost electron shell
200
How do you find the number of protons?
look at the atomic number
200
Where are the elements located on the periodic table that react the least?
right, or noble gasses, or group 18
200
The nucleus of an atom contains what?
protons & neutrons
300
What subatomic particle is red?
protons
300
How do you find the number of neutrons?
atomic mass - atomic number = neutrons
300
The quantity of which subatomic particle determines the element’s identity?
Atomic Number or protons
300
What is the name of the element that has 30 protons and 35 neutrons.
Zinc
300
The period number tells you what?
how many energy levels/electron shells there are
400
What element has the same chemical properties as Chlorine?
Florine, Bromine, Iodine...
400
What is the mass of a proton & neutron?
1amu
400
What subatomic particle do we look at to determine an elements chemical properties?
Valence Electrons
400
What is the reactivity of Chlorine ?
Very High
400
What is the mass of an electron?
1/2000 amu