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Scientists and such
protons,neutrons,electrons
34
Chemistry
11th Grade
10/07/2007

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Cards

Term
Who utilized the oil drop experiment?
Definition
Robert Millikan
Term
Who came up with the cathode ray tube?
Definition
J.J Thompson
Term
Who determined that there are positive and negative charges?
Definition
Ben Franklin
Term
What are the principles of chemical behavior?
Definition
*Law of conservation of matter
*Law of constant composition
Term
Excess negative charge is discharged a ________.
Definition
Static electricity.
Term
Which scientist determined that elements are composed of atoms?
Definition
Dalton
Term
Who determined that opposites attract and likes repel?
Definition
Ben Franklin
Term
a given __________ always hasthe same relative ______ and kind of ________.
Definition
*compound
*number
*atoms
Term
Who said that atoms contain particles that contain an electrical charge?
Definition
Michael Farrady
Term
Wht is a cathode ray?
Definition
A stream of particles.
Term
This scientist came up with the charge to mass ratio of an electron.
Definition
J.J Thompson
Term
A ________ always contains the same ______________ in the same ___________ by mass.
Definition
*compound
*elements
*proportions
Term
Robert millikan determined.....
Definition
The mass of an electron,
Term
J.J Thompsons cahtode ray proved that ________________
Definition
a magnet can deflect a ray.
Term
Who determined the mass of an electron?
Definition
Robert Millikan
Term
Who used the plum pudding model?
Definition
J.J Thompson
Term
Which element displays radioactivity?
Definition
Uranium
Term
Who named the nucleus?
Definition
Rutherford
Term
which rays are high speed electrons?
Definition
Beta
Term
what is radiation?
Definition
The spontaneous emission of radiation from an ATOM.
Term
What kind of charge do cathode ray prticles have?
Definition
Negative
Term
What is the atomic theory of matter?
Definition
That elements are made up of atoms.
Term
What is the atomic theory of matter?
Definition
That elements are made up of atoms.
Term
Dalton stated that ____________________.
Definition
All atoms of an ELEMENT are identical, but different from atoms i nother elements.
Term
All elements are compared to which isotope?
Definition
The carbon 12 isotope
Term
Which scientist stated that every element has aunique atomic number?
Definition
Henry Mosely
Term
What happens to the chemical properties of an element as it gives off radiation, and who discovered this?
Definition
*Henri Becquerel
*It changes
Term
Who utilized the gold foil/alpha scattering experiment?
Definition
Ernest Rutherford
Term
Which ray is not made up od particles?
Definition
Gamma Rays
Term
What is the charge of an alpha particle?
Definition
+2
Term
Who determined how to find the number of neutrons in an atom?
Definition
Henry Mosely
Term
What did Ernest rutherfords Gold Foil experiment prove?
Definition
That the atoms positive charge and most of its mass was located in the nucleus.
Term
J.J Thompsons plum pudding model was reputed by __________ experiment with ___________ _______.
Definition
*Rutherford
*Gold Foil
Term
Who said that the chemical property of an element changes as it gives off radiation?
Definition
Henri Becquerel
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