Atomic Particles
Ions
Isotopes
Atomic History
The Kitchen Sink
100
What is the smallest unit of an element that retains all of the properties of that element?
Atom
100
an atom with an electrical charge is called what?
ion
100
Isotopes of the same element have different what?
masses or different number of neutrons
100
ancient Greeks believed that all matter was made up of what 4 elements?
fire, water, earth and air
100
what does the Greek word "atoms" mean?
indivisible
200
the name of the negative charged part of an atom
electron
200
what is a negatively charged atom called?
an anion
200
What does the number 235 represent in Uranium-235?
the mass number
200
Who was the first scientist to create an atomic model that included electrons and what was the name of the model?
J.J. Thomson
Plum pudding model
200
What is the name for Dalton's atomic model?
The billiard ball model
300
These two atomic particles account for an atom's mass
protons and neutrons
300
what is the name of a positively charged atom?
a Cation (it's paw-sitive)
300
How many neutrons does Uranium-235 have?
143
300
What made Rutherford's and Bohr's atomic model unique from the ones before it?
they have a nucleus surrounded by electrons and are made up of mostly empty space
300
what is the capital of Texas?
Austin
400
what is the name of the blue region in this diagram?
electron cloud
400
If an atom is neutral, how would you show that on a nuclear symbol?
Leave it blank
400
what type of notation is used when you give the elements name followed by its mass?
hyphen notation
400
Antoine Lavoisier is credited with creating what law and what does that law state?
The law of the conservation of mass - in a chemical reaction the mass of the reactants equals the mass of the products (mass is neither created or destroyed)
400
What element on the periodic table has 40 protons?
Zirconium
500
Name the particles and their charges of an atomic nucleus
proton - positive
neutron - neutral
500
create a nuclear symbol for a lithium ion that lost one(1) electron
500
true or false:
Isotopes of the same element will react differently in chemical reactions
false
500
what principle states that it is impossible to simultaneously know an electron's position and velocity?
the Heisenberg Uncertainty Principle
500
1/12 of the mass of carbon-12 is equal to what?
1 amu (atomic mass unit)