History of Atomic Theory

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What did John Dalton's Atomic Theory propose about atoms?

Atoms of different elements can combine in constant ratios to form new substances. (correct)

Atoms consist of definite particles called protons.

Atoms of different elements have the same properties.

Atoms can be created, divided, or subdivided by a chemical means.

According to the Raisin Bun or Plum Pudding Model, how did J.L. Thomson view the structure of an atom?

An atom had a nucleus consisting of positive particles and space surrounding it.

An atom had a nucleus where the negatives and positives resided close to one another. (correct)

An atom was a structure with positive and negative particles distributed randomly.

An atom was a densely packed object with only positive particles.

What did the Gold Foil Experiment prove about the composition of an atom?

Atom was composed primarily of negative particles.

Atom was composed primarily of space because most particles were deflected at angles. (correct)

Atom was composed primarily of protons and neutrons.

Atom was completely solid with no space within it.

What is an isotope?

An element that has the same number of protons but different number of neutrons within the nucleus. Signup and view all the answers

What did Antoine Lavoiser discover about mass?

Matter cannot be created or destroyed in a chemical reaction. Signup and view all the answers

What did J.L. Thomson discover about atoms in 1897?

Atoms were made up of smaller positive and negative particles. Signup and view all the answers

Which subatomic particle did Bothe initially misinterpret as a new type of radiation?

Neutron Signup and view all the answers

What is the common feature that emerged from Max Planck's experimentation of the photoelectric effect?

Linear relationships Signup and view all the answers

What is represented by the y intercept on the graph related to the photoelectric effect?

Work function Signup and view all the answers

What does the Planck constant represent?

Energy per single photon of given frequency Signup and view all the answers

Who performed the famous oil can experiment?

Robert Milikan Signup and view all the answers

What is the minimum energy needed to release an electron from a blackbody called?

Work function Signup and view all the answers

What type of radiation did Bothe initially misinterpret as a new type of radiation?

Neutron radiation Signup and view all the answers

What did Robert Milikan quantize using the famous oil can experiment?

Charge of electrons Signup and view all the answers

What does Z number represent in relation to atomic structure?

Z is the number of protons (atomic number) Signup and view all the answers

Who was credited for the discovery of neutrons?

James Chadwick Signup and view all the answers

What did the Gold Foil Experiment prove about the composition of an atom?

Atoms are composed primarily of space because most particles went right through Signup and view all the answers

What did John Dalton's Atomic Theory propose about atoms?

Each element is made up of it’s own type of atom Signup and view all the answers

What did J.L. Thomson discover about atoms in 1897?

Atoms were made up of smaller positive and negative particles Signup and view all the answers

According to the Raisin Bun or Plum Pudding Model, how did J.L. Thomson view the structure of an atom?

As an object densely packed with negative and positive particles existing together Signup and view all the answers

What is an isotope?

An element with the same number of protons but different number of neutrons within the nucleus Signup and view all the answers

What did Antoine Lavoiser discover about mass?

Discovered the Law of Conservation of Mass Signup and view all the answers

What was misinterpreted as a new type of radiation by Walter Bothe?

Neutrons Signup and view all the answers

What is the threshold frequency in the context of the photoelectric effect?

The minimum frequency of light that causes electron emission Signup and view all the answers

What did Max Planck propose as a new concept that challenged classic physics norms?

The wave-particle duality of photons Signup and view all the answers

What is the work function of a metal in the context of the photoelectric effect?

The minimum energy needed to release an electron from the metal Signup and view all the answers

Which physicist actually discovered the presence of neutrons, although initially misinterpreted by Bothe?

James Chadwick Signup and view all the answers

What did Hertz discover in 1887 that later contributed to the development of quantum atomic structure?

The photoelectric effect Signup and view all the answers

What is represented by the x-intercept on the graph related to the photoelectric effect?

The minimum frequency of light that causes electron emission Signup and view all the answers

What blurred the lines of matter and energy, challenging traditional Newtonian and Wave theories according to Max Planck?

Photon energy packets Signup and view all the answers

What did Robert Milikan quantify using the famous oil can experiment?

Electrical charge of an electron Signup and view all the answers

What did Walter Bothe actually discover before misinterpreting it as a new type of radiation?

Presence of neutrons Signup and view all the answers

History of Atomic Theory

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Questions and Answers

What did John Dalton's Atomic Theory propose about atoms?

According to the Raisin Bun or Plum Pudding Model, how did J.L. Thomson view the structure of an atom?

What did the Gold Foil Experiment prove about the composition of an atom?

What is an isotope?

What did Antoine Lavoiser discover about mass?

What did J.L. Thomson discover about atoms in 1897?

Which subatomic particle did Bothe initially misinterpret as a new type of radiation?

What is the common feature that emerged from Max Planck's experimentation of the photoelectric effect?

What is represented by the y intercept on the graph related to the photoelectric effect?

What does the Planck constant represent?

Who performed the famous oil can experiment?

What is the minimum energy needed to release an electron from a blackbody called?

What type of radiation did Bothe initially misinterpret as a new type of radiation?

What did Robert Milikan quantize using the famous oil can experiment?

What does Z number represent in relation to atomic structure?

Who was credited for the discovery of neutrons?

What did the Gold Foil Experiment prove about the composition of an atom?

What did John Dalton's Atomic Theory propose about atoms?

What did J.L. Thomson discover about atoms in 1897?

According to the Raisin Bun or Plum Pudding Model, how did J.L. Thomson view the structure of an atom?

What is an isotope?

What did Antoine Lavoiser discover about mass?

What was misinterpreted as a new type of radiation by Walter Bothe?

What is the threshold frequency in the context of the photoelectric effect?

What did Max Planck propose as a new concept that challenged classic physics norms?

What is the work function of a metal in the context of the photoelectric effect?

Which physicist actually discovered the presence of neutrons, although initially misinterpreted by Bothe?

What did Hertz discover in 1887 that later contributed to the development of quantum atomic structure?

What is represented by the x-intercept on the graph related to the photoelectric effect?

What blurred the lines of matter and energy, challenging traditional Newtonian and Wave theories according to Max Planck?

What did Robert Milikan quantify using the famous oil can experiment?

What did Walter Bothe actually discover before misinterpreting it as a new type of radiation?

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