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"C" is the element symbol for which element?
Carbon
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How many total electrons does carbon have?
6
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How many protons are in the element sodium?
10
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An atom with atomic number 6 would have how many protons?
6
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The positive particles of an atom are...
protons
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The central region of an atom where its neutrons and protons are is its...
Nucleus
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What is the number of protons that the element in this image contain?
7
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A particle that moves around the nucleus is a(n)...
electron
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What is the basic building block for all matter in the universe?
atom
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What are the 3 particles that make-up an atom?
Protons, neutrons and electrons
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The particle in an atom that is neutral and have no charge is...
Neutron
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Who stipulated that electrons orbit the nucleus at fixed energies and distances?
Niels Bohr
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Democritus called the tiniest particles of matter "atomos", which is Greek for _____
indivisible, unbreakable
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The electron was discovered in 1897. Who discovered it, Thompson or Schrodinger?
Thompson
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Who first proposed that everything in the world was made up of tiny particles, Dalton or Democritus??
Democritus
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How many electrons are in the element oxygen?
8
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What does the nucleus consist of?
Protons and neutrons
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Electrons have what type of charge?
Negative
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