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15 Cards in this Set

  • Front
  • Back
Speed up
Accelerate
Opposite matter
Antimatter
Smallest element
Atom
Test theory
Experiment
Push pull
Force
Educated guess
Hypothesis
Two elements
Compound
Negative particle
Electron
Proton neutron
Nucleon
Atom middle
Nucleus
Indivisible object
Particle
Gas Matter
Plasma
Positive particle
Proton
Building block
Quark
Object's speed
Velocity