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The Basics of Atoms

AJDS Pent Work Section 1

QuestionAnswer
What is an atom? The basic building block of all matter.
What is matter? Anything that has mass and takes up space.
Where is the nucleus located at? At the center of the atom.
What is a proton? A positively charged particle.
What is a neutron? A neutral particle which has no charge.
What is an electron? A negatively charge particle.
Who was the first person to use the word "atom". The Greek philosopher Democritus.
Which part of the atom has the most mass? The nucleus.
Who found the electrons? J. J. Thomson
What is the lightest part of an atom? Electrons
What is within an atom? Protons, Electrons, and Neutrons.
What is the Greek meaning of the word atom? Indivisible