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The Atom (Grade 6)

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The Atom

The nucleus is often found near the center of an atom.
  1. True
  2. False
Protons are negative, while electrons are positive particles.
  1. True
  2. False
The atom is the smallest particle of an element.
  1. True
  2. False
We can use a very high-powered microscope to see atoms.
  1. True
  2. False
What makes up all matter on Earth?
  1. Oxygen
  2. Bones
  3. Atoms
  4. Neutrons
The scientist who first discovered electrons was               .
  1. Rutherford
  2. Bohr
  3. Thompson
  4. Democritus
A(n)                 is the smallest part of matter.
  1. atom
  2. element
  3. liquid
  4. ion
Select all that are parts of an atom.
  1. Brain
  2. Protons
  3. Elements
  4. Electrons
  5. Nucleus
Scientist                   developed a simplified model of an atom.
  1. Dmitri Mendeleev
  2. Robert Boyle
  3. Niels Bohr
  4. Ernest Rutherford
The space that represents the average distance from the nucleus that electrons travel is called a                .
  1. group
  2. period
  3. shell
  4. mass
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