2. Atomic Theory Flashcards
What is the name of the particles that everything is made up of?
Atoms
What are the three sub-atomic particles called?
Protons, Neutrons and Electrons
Most of an atom is empty space
True or False?
True
What is the location, mass and charge of a proton?
Location - Nucleus
Mass - 1 amu
Charge - positive
What is the location, mass and charge of a neutron?
Location - nucleus
Mass - 1
Charge - neutral
What is the location, mass and charge of an electron?
Location - energy levels surrounding nucleus
Mass - 0
Charge - negative
What is the electron arrangement in the first three shells?
Shell One - 2
Shell Two - 8
Shell Three - 8
On a periodic table, metals appear to the right of the line
True or False?
False
What are the names of Group 1, 2, 7 and 8?
Group 1 - Alkali metals
Group 2 - Alkali earth metals
Group 7 - Halogens
Group 8 - Noble gases
Give an example of a solid
Magnesium, iron, copper, sodium, carbon, ect
Give an example of a liquid
Mercury and bromine
Give an example of a gas
Hydrogen, fluorine, oxygen, chlorine, nitrogen, ect
Give the definition of an atomic number
The number of protons the element has
Why are atoms electrically neutral?
They have the same number of positive protons and negative electrons
(usually)
What do you add to find the mass of an element?
Number of protons + Number of neutrons
