COMPOSITION AND CLASSIFICATION OF MATTER

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Across
  1. 3. – Anything that has mass and occupies space.
  2. 5. Mixture – A mixture that is uniform throughout (example: salt water).
  3. 8. Bonds – The forces that hold atoms together in compounds.
  4. 11. – The smallest unit of matter that retains the properties of an element.
  5. 12. Bonds – A type of covalent bond where electrons are shared unequally, creating partial charges.
  6. 13. – A state of matter with a definite volume but no definite shape.
  7. 16. – Atoms of the same element with the same number of protons but different numbers of neutrons.
  8. 18. Bonds – Bonds formed when electrons are transferred from one atom to another, creating oppositely charged ions.
  9. 19. – Atoms or molecules that have gained or lost electrons, giving them a positive or negative charge.
Down
  1. 1. – Pure substances made of only one type of atom.
  2. 2. Substances – Matter that has a fixed composition and definite properties (elements and compounds).
  3. 3. – Combinations of two or more substances that are physically combined but not chemically bonded.
  4. 4. Theory – The scientific theory that explains the nature, behavior, and structure of atoms.
  5. 6. – Negatively charged particles found outside the nucleus of an atom.
  6. 7. Mixture – A mixture where the substances are not evenly mixed (example: salad).
  7. 9. Bonds – Bonds formed when atoms share electrons.
  8. 10. Number – The number of protons in the nucleus of an atom, which identifies the element.
  9. 14. Mass – The weighted average mass of all the isotopes of an element.
  10. 15. – A state of matter with neither definite shape nor definite volume.
  11. 17. – A state of matter with a definite shape and volume.