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Chemistry

QuestionAnswer
What is inside the nucleus of an atom? Protons and Neutrons
What is the sub-atomic particle that is NOT apart of the nucleus? Electrons
Is the atomic number at the top or bottom of the periodic table element? On the top
Where is the atomic mass on an element in the periodic table? Down the Bottom, below the full name of the element
Which of the sub-atomic particles has a negative charge? Electrons
Which sub-atomic particle has no charge? Neutrons
Which sub-atomic particle has a positive charge? Protons
What does the atomic number on the periodic table mean? How many protons are in the atom
How do you find the amount of neutrons in the atom? If you take the mass number from the atomic number, it will equal to how many neutrons there are
How do you find the amount of electrons in an atom? It is the same as the number of protons
When was the first model of the atom created? 1803, by John Dalton
Which scientist made the 'plum pudding' model? Thomson, in 1904
Who stated that atoms are indivisible? John Dalton
When did Rutherford create the nuclear model? 1911
Who stated that electrons do not move in set paths around the nucleus, but in waves? Erwin Schrödinger, 1926
What did the planetary model propose? Stable electron orbits
Who won the Nobel Prize in 1897 for creating the plum pudding model? J.J. Thomson
What is proposed in the most recent model of the atom (Quantum model) That electrons do not move in set paths around the nucleus, but in waves, and that it is impossible to know the exact location of the electrons.
What are 2 STABLE examples of isotopes of carbon? Carbon-12 and Carbon-13
What the most common unstable isotope of carbon? Carbon-14
What is Carbon-14 found in primarily? Fossils, used to find the age of these
What is a stable isotope? An isotope that will never undergo a radioactive decay process
What is an unstable isotope? An isotope that may undergo a radioactive decay process
What is a radioisotope? An unstable isotope which undergo nuclear decay
What are 3 examples of a radioisotope? Carbon-14, Zinc-65, Cobalt-60, Copper-64, Gold-198, Flourine-18
What is a half-life of a radioactive element? How long it takes for half of the radioisotope to decay
What of the 3 radioactive decay processes creates another element? Example, Uranium to theorum and helium Alpha decay
What of the 3 radioactive decay processes ejects an electron? Beta Decay
Which of the 3 radioactive decay processes ejects a photon and emits rays? Gamma Decay
Which physicist came up with the Nuclear model? Rutherford
Which physicist came up with the planetary model? Bohr
Which radioactive decay process can pass through a hand but not aluminium? Beta Decay
Which radioactive decay process cannot pass through a hand? Alpha Decay
Which radioactive decay process can pierce through A hand, aluminium, but not a thick layer of lead? Gamma Decay
Which of the 3 radioactive decay processes has the strongest rays? Gamma decay
Which of the 3 radioactive decay processes has the weakest rays? Alpha Decay
Who created the solid sphere model? Dalton
Created by: user-1732651
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