Chemistry
Really
IS The
Best
Ever
100
What is matter composed of?
What is atoms?
100
Who developed the Atomic Theory?
John Dalton
100
What was J.J, Thompson's model called?
What is Plum Pudding
100
What subatomic particle has a negative charge?
What is electron.
100
What causes an electron to move from one energy level to another
What is energy
200
Who was the 1st to suggest the existence of an atom?
What is Democritus?
200
All elements are composed of?
What is atoms
200
Who determined that an electron has a negative charge?
What is Milikan
200
What is the atomic number?
What is # of protons
200
What do atoms emit when they release energy?
What is light
300
T or F Atoms are indivisible.
What is true.
300
Atoms of the _________element are identical.
What is same
300
Who discovered the neutron?
What is Chadwick
300
Atomic # = _______________ = # electrons
What is # of protons
300
Where are the electrons located?
What is inside the atom, outside the nucleus.
400
What did Dalton concluded about gases?
What is they are made up of particles
400
__________ contain atoms of more than one element
What is compounds
400
What charge does a proton have?
What is Positive
400
What did Bohr's model of the atom focus on?
What are the electrons
400
What is the lowest possible energy level called?
What is the ground state.
500
T or F Compounds have a fixed composition.
What is true
500
Who discovered the electron?
What is J.J. Thompson
500
What subatomic particle is almost the same mass as a proton?
What is neutron
500
What is an energy level?
What is the possible energies that an electron can have
500
What was the purpose of the Flame Lab?
What is to show how an electron can gain then lose energy, emitting light in the process.
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