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10 Cards in this Set
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- Back
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What are three parts of an atom?
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Protons ,neutrons, and electrons
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What two ways made up the PTE?
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atomic mass, elements with same properties are in same family.
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What makes up a nucleus?
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Protons and neutrons and electron cloud.
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Define Element.
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a substance that cant be broken down into another substance
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What is the name of the columns on PTE chart?
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Groups or Familys.
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What are the rows on PTE chart named?
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Periods.
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Define Matter.
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Anything that has mass and takes up space.
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What happens when you change the particles in an atom.
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The element changes.
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Who created the PTE?
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Dimitri Mendeleev.
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What are the charges in protons , neutrons, and electrons?
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Protons- positive, Neutrons- neutral, Electrons- negative .
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