What's the Matter?
So much Change
History of the Atomic Model
Atomic Structure
100
Which Greek gentleman first suggested the idea of indivisible "atoms"?
Democritus
100
What is the change from a gas to a liquid?
Condensation
100
Who proposed that atoms are indivisible and cannot be destroyed? He also believed that elements are made of atoms.
John Dalton
100
Which subatomic particle has a negative one charge?
Electron
200
What is anything that occupies space and has mass?
Matter
200
Who developed the plum pudding model?
J. J. Thompson
200
What does most of the atom consist of?
Empty space
200
What charge does an anion have?
Negative
300
What is the most workable model of matter?
Matter exists in the form of particles in constant motion
300
What is one example of a compound?
H20 (water)
NaF (sodium fluoride)
NaCl (table salt)
LiCl (lithium chloride)
CO2 (carbon dioxide)
300
How much bigger is the proton than the electron?
1836 times bigger
300
What is atomic mass?
The weighted average of the masses of the naturally occurring isotopes for that element.
400
Daily Double!
What is the difference between mass and weight?
Mass - the amount of matter in an object
Weight - the measure of gravity acting on the matter in an object. can vary based off of location
400
What is the difference between a physical change and a chemical change?
Physical Change - alters the appearance, not the composition, of a substance
Chemical changes - does alter the composition of a substance
400
What did Aristotle believe about matter?
Matter had no empty space between atoms and that matter could be cut down indefinitely. He DID NOT believe in particles
400
What are the three subatomic particles in an atom?
Protons
Neutrons
Electrons
500
What would the abbreviation be for a sodium ion that has lost an electron?
Na+
500
Give me one example of a physical change.
Give me one example of a chemical change.
Physical change - Boiling, grinding, changing states of matter (freezing, melting, etc.)
Chemical change - burning, chemical reactions
500
What model did Hantaro Nagaoka propose?
The saturnian model
500
How many protons?
How many neutrons?
How many electrons?
Six protons
Eight neutrons
Six electrons