Aristotle said the 4-elements consisted of:
_____, ____, ____, ____.
What is EARTH, AIR, FIRE, WATER?
100
1) All substances are made of atoms. Atoms are small particles that cannot be created, divided, or destroyed.
2) Atoms of the same element are exavtly alike, and atoms of different elements are different.
3)Atoms join with other atoms (in fixed ratios) to make new substances.
These three (3) statements refer to the "_____ ____."
What is the ATOMIC THEORY?
100
The scientists who came up with the "Plum-Pudding" model.
What is JJ. Thomson?
100
This scientist was the first to use evidence from experiments to describe the atom.
What is DALTON?
100
This scientist created the "Gold-Foil" experiment.
What is Rutherford?
200
The experiment that led to the discovery of the Nucleus within the atom.
The existence of the proton was also inferred.
What is GOLD-FOIL?
200
The scientist that said atoms were indivisible (uncuttable)...Atomos!
What is DEMOCRITUS?
200
The experiment that led to the discovery of the negatively charged electron (e-).
What is CATHODE RAY TUBE?
200
The model of the atom created by jj. Thompson showing the negative electrons were scattered throughout a ball of positively charged stuff.
What is PLUM PUDDING?
200
Rutherford's model of the atom is called the _______ model because it looks like the electrons are traveling around a small, dense, positively charged nucleus.
What is PLANETARY?
300
The current/modern model of the atom is called the ________
What is CLOUD?
300
Rutherford said atoms are mostly made up of _____ _____ through which electrons travel.
What is EMPTY SPACE?
300
Which scientist's model shows that electrons travel in definite paths around the nucleus and can jump between energy levels?
What is BOHR?
300
The two scientists credited for the modern model of the atom...the cloud model.
What is SCHRODINGER & HEISENBERG?
300
Said that everything is made up of atoms...and atoms were all the same...small, hard spheres.
What is DEMOCRITUS?
400
Said atoms are small, hard particles made of the same material but had different sizes and shapes for each different kind of substance (each element is made up of one kind of particle...and different for each element).
What is DALTON?
400
The Cathode Ray Tube experiment led to the discovery of the ________.
What is ELECTRON (aka. corpuscles)?
400
Said atoms join together with other atoms in fixed ratios to make new substances...ex. H20!
What is DALTON
400
Scientist who developed the "Plum Pudding model."
What is Thomson?
400
Scientist that developed the "Gold-Foil experiment."
What is RUTHERFORD?
500
The Gold-Foil experiment led to the discovery of the positively charged _______ in an atom.
What is NUCLEUS?
500
This model suggests electrons do not travel in definite paths (as Bohr said)...the exact path of a moving electron cannot be predicted...there are regions inside the atom where electrons are likely to be found.
What is CLOUD model?
500
The discovery of which particle proved that the atom is not indivisible as Dalton said ...rather the atom could be cut into smaller pieces.
What is ELECTRON?
500
This scientist concluded that the atom is mostly empty space with a small, massive (most of the mass of the atom), positively charged center (nucleus).
Also, what was his experiment that developed this conclusion?
What is RUTHERFORD (Gold-Foil)?
500
Give the scientists name:
1) Plum-Pudding model
2) Gold-Foil experiment
3) Cathode Ray Tube experiment.
4) Atomic Theory
5) Planetary model
What is 1) Thomson, 2) Rutherford, 3) Thomson,
4) Dalton, 5) Rutherford?