Matter and Atoms

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Across
  1. 3. A subatomic particle that has no charge and that is found in the nucleus of an atom
  2. 4. A subatomic particle that has a negative charge found in an electron cloud orbiting the nucleus; it is important to bonding and chemical reactions
  3. 8. Particles smaller than an atom; make up an atom: protons, neutrons, electrons
  4. 11. The number of protons in the nucleus of an atom; it determines the chemical properties of an element and its place in the periodic table.
  5. 12. Two or more atoms bonded together; can be the same atoms or different
  6. 13. A mixture in which we can see the different components.
  7. 14. It is a mixture in which we can´t see the different components.
  8. 16. the abbreviation of an elements name; 1 or 2 letters, first letter is always capitalized, second is never capitalized
Down
  1. 1. The basic unit of matter: the building block of elements.
  2. 2. A single kind of matter that is pure and has a specific set of properties.
  3. 5. Center of an atom
  4. 6. Anything that has mass and takes up space.
  5. 7. Two or more substances that are mixed together but not chemically combined.
  6. 9. The number of protons and neutrons in an atom's nucleus
  7. 10. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  8. 15. A substance made of only one kind of atom.