Biology H Crossword: Chapter 2

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Across
  1. 4. 6.02 × 1023 molecules
  2. 6. two forms of an element with different numbers of neutrons
  3. 8. Thermal energy in transfer from one body of matterto another
  4. 10. the clinging of one substance to another,also plays a role
  5. 13. a substance consisting of two or more elements
  6. 14. A unit of energy where 1 cal = 4.184 J
  7. 15. compounds formed by ionic bonds
  8. 17. Calcium,Phosphorus,Sulfur,Sodium,Iodine
  9. 18. an atom’s attraction for the electrons of a covalent bond
  10. 19. A homogeneous liquid mixture
Down
  1. 1. negatively charged ion
  2. 2. reached when the forward and reverse reaction rates are equal
  3. 3. anything that takes up space and has mass
  4. 5. the starting molecules of a chemical reaction
  5. 7. The final molecules of a chemical reaction are called
  6. 9. The notation used to represent atoms and bonding
  7. 11. represents the average kinetic energy of molecules
  8. 12. positively charged ion
  9. 13. is the amount of heat required to raise the temperature of 1 g of water by 1°C
  10. 16. the unit of measurement for the mass of protons/neutrons