Cathode Ray Tube, Plum Pudding Model, Cathode Ray Experiment, Atom
The key terms of this Chemistry chapter include Atom, Nucleus, Electron, Proton, Neutron, Plum Pudding Model, Cathode Ray Experiment, chemistry, homework.
Nucleus
an atom’s central region, which is made up of protons and neutrons
Proton
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Neutron
A subatomic particle that has no charge and that is found in the nucleus of an atom
James Chadwick
Discovered the neutron
Democritus
The first to suggest atoms existed
Dalton
Suggested all of the atoms of the given element were exactly alike, and atoms of different elements can join to make compounds
law of definite proportions
a chemical compound contains the same elements in exactly the same proportions by weight or mass
J.J Thompson
discovered the electron
J.J Thompson’s model
Cathode Ray Tube
What did the cathode ray experiment discover?
Cathode rays were made if negatively charged particles that come from inside atoms
Electron
A subatomic particle that has a negative charge
Cathode Ray Tube
A near airless tube connected to a battery in which electricity passed from the negative cathode to the positive anode.
Plum Pudding Model
Electrons were spread throughout the atom like blueberries in a muffin
What did the plum pudding model suggest?
the atom is a ball of positive charge with negative electrons embedded in it
Ernest Rutherford
discovered the nucleus, and the nucleus had a positive charge
Gold Foil Experiment
alpha particles that were shot at gold foil were deflected when they hit the positive center of gold atoms. The nucleus was discovered as a result of this experiment.
Nucleus
an atom’s central region, which is made up of protons and neutrons
Proton
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Neutron
A subatomic particle that has no charge and that is found in the nucleus of an atom
James Chadwick
Discovered the neutron
Democritus
The first to suggest atoms existed
Dalton
Suggested all of the atoms of the given element were exactly alike, and atoms of different elements can join to make compounds
law of definite proportions
a chemical compound contains the same elements in exactly the same proportions by weight or mass
J.J Thompson
discovered the electron
J.J Thompson’s model
Cathode Ray Tube
What did the cathode ray experiment discover?
Cathode rays were made if negatively charged particles that come from inside atoms
Electron
A subatomic particle that has a negative charge
Cathode Ray Tube
A near airless tube connected to a battery in which electricity passed from the negative cathode to the positive anode.
Plum Pudding Model
Electrons were spread throughout the atom like blueberries in a muffin
What did the plum pudding model suggest?
the atom is a ball of positive charge with negative electrons embedded in it
Ernest Rutherford
discovered the nucleus, and the nucleus had a positive charge
Gold Foil Experiment
alpha particles that were shot at gold foil were deflected when they hit the positive center of gold atoms. The nucleus was discovered as a result of this experiment.
Nucleus
an atom’s central region, which is made up of protons and neutrons