Chemistry Crossword

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Across
  1. 2. Something with a variable composition
  2. 3. Positively charged ion
  3. 6. A fundamental substance that cannot be broken down into other substances by chemical means
  4. 11. The 'stuff' that the universe is composed of, and has mass and occupies space
  5. 13. Electrically charged atom or molecule due to unbalance in the number of protons and electrons
  6. 14. Distinct substance that is composed of the atoms of two or more elements
  7. 15. Dense, positively charged center of an atom
Down
  1. 1. An anion containing one or more oxygen atoms bonded to another element
  2. 4. Particle with a neutral charge
  3. 5. Positively charged particles
  4. 7. Negatively charged particles
  5. 8. A group of atoms bonded together
  6. 9. An atom of an element with the same number of protons but a different number of neutrons compared to other atoms of the same element
  7. 10. Negatively charged ion
  8. 12. A substance that can donate a proton (\(H^{+}\)) or accept an electron pair to form a covalent bond