Subatomic Particles
This particle has a positive charge
Proton
This number determines the identity of an element
atomic number
An atom loses electrons, what is the charge left over on this atom?
Positive
- More protons than electrons
Isotopes are atoms of the same element with different numbers of what?
Neutrons
What are the rows on the periodic table called?
Double points:
What are the columns called?
Rows: Period
Extra Points:
Columns: Groups
This particle has almost no mass and is found outside the nucleus
Electron
What does the atomic number tell you?
Number of protons
An atom gains electrons, what is the charge left over on this atom?
negative
- more electrons than protons
What is the same in isotopes of the same element?
Where are metals located on the periodic table?
Double Points:
what group of elements separates the metals and nonmetals on the periodic table?
Metals are located to the left of the stair case.
Double Points:
The metalloids
This particle has no charge and is found in the nucleus
Neutron
How do you find the number of neutrons using mass number?
#neutrons = Mass number - atomic number (# protons)
How many protons, neutrons and electrons does Al+3 have?
Protons - 13
neutrons - 14
electrons - 10
What does the number after the dash in an isotopes name tell you?
Ex: Potassium - 40
The atomic mass of the isotope
What is the name of the family of elements found in group 17?
Halogens
Where is most of the atom's mass located?
Nucleus
How many protons, neutrons and electrons does a neutral atom of Bromine (Br) have?
Protons - 35
Neutrons - 45
Electrons - 35
Sodium loses 1 electron. How many protons, neutrons and electrons does it have and what is its charge?
Protons = 11
neutrons = 12
electrons = 10
Na+1
How many protons, neutrons and electrons does Carbon - 14 have?
Protons - 6
Neutrons - 8
Electrons - 6
What family of elements contains 7 unreactive gases?
Noble Gases (group 18)
Which two particles have a mass of 1 atomic mass unit and are located in the nucleus?
Protons and Neutrons
How many protons, neutrons and electrons does a neutral atom of cobalt have?
Protons - 27
Neutrons - 32
Electrons - 27
Oxygen gains 2 electrons. How many protons, neutrons and electrons does it have and what is its charge?
Protons = 8
neutrons = 8
electrons = 10
O-2
How many protons, neutrons and electrons does Uranium - 238 have?
Protons - 92
Neutrons - 146
Electrons - 92
Name one Alkali metal
Sodium
Potassium
Rubidium
Cesium
Francium