Science Crossword - Chemistry, Physics, and Energy

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Across
  1. 2. Atoms with a positive or negative charge
  2. 3. Chemicals you start with before the reaction in chemical equation
  3. 7. Elements on periodic table can be grouped into these based on their chemical properties.
  4. 8. Gases or brittle solids at room temperature, and good insulators
  5. 9. Combination of two or more pure substances that are not chemically combined
  6. 12. Positively charged ions
  7. 13. New chemicals formed by the reaction in chemical equation
  8. 14. Number of protons an atom has
  9. 16. Atoms of the same elements that have a different atomic mass than found on the periodic table
  10. 17. Vertical columns of elements on the periodic table
  11. 19. Properties that are determined by the use of five senses
  12. 21. Russian Chemist who developed periodic table in 1869, in order of increasing atomic mass.
  13. 22. Good conductors of heat, exist as solids at room temperature
Down
  1. 1. Average masses of all the isotopes of an element
  2. 4. Simplest form of pure substance
  3. 5. Ability to do work or cause change
  4. 6. Horizontal rows of elements on periodic table
  5. 10. Contains protons and neutrons
  6. 11. Properties that are determined by a substance's ability to react with other substances.
  7. 12. Pure substance that is unions of two or more different elements. Can be broken into simpler substances.
  8. 15. Have properties of both metals and non-metals. Exist as solids at room temperature
  9. 18. Negatively charged ions
  10. 20. Energy that is transferred between objects that are different temperatures