Atomic Theorists
Authored by Mary Grosjean
Chemistry
9th - 12th Grade
MS-PS1-1 covered
Used 51+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Who was one of the first Atomic Theorists who defined the smallest piece of matter as "atomos"
Dalton
Thomson
Democritus
Rutherford
Answer explanation
In 430 BC, Democritus said matter is formed of small pieces that could not be cut into smaller parts called "atomos" meaning uncuttable.
Tags
MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
True or False: Atoms of one element are all the same.
True
False
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MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
True or False: Atoms of different elements are different.
True
False
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MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
John Dalton said Compounds were formed by chemically combining atoms. Are compounds considered Pure Substances or Mixtures?
Pure Substances
Mixtures
Answer explanation
Mixtures are substances that are only physically combined. Since Compounds are chemically combined atoms, it would take a chemical reaction to separate them, therefore they are considered Pure Substances.
Tags
MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Which Atomic Theorists used a Cathode and an Anode Ray to discover the negatively charged particles known as electrons?
Democritus
Dalton
Thomson
Rutherford
6.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Thomson created an atomic model that looks similar to a Chocolate Chip Cookie. What do the chocolate chips represent?
Protons
Neutrons
Electrons
Nucleus
Answer explanation
In 1897, JJ Thomson did an experiment involving a cathode and anode ray. through the experiment he discovered that atoms contain (-) charged particle, called electrons.
7.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Which atomic theorist did the Gold Foil Experiment to eventually discover the nucleus?
Democritus
Thomson
Bohr
Rutherford
Tags
MS-PS1-1
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