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10 Cards in this Set

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