Physical Science Project

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Across
  1. 5. electromagnetic waves with the longest wavelengths and lowest frequencies
  2. 7. waves with wavelengths between radio and visible light
  3. 8. Regions of space that consecutively surround the nucleus of an atom.
  4. 12. A combination of chemical symbols and numbers to represent a substance
  5. 14. type of electromagnetic wave produced by the sun
  6. 15. Water dissolves everything what is it
  7. 16. the force that holds two atoms together
  8. 18. A substance produced in a chemical reaction
  9. 19. States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons
  10. 21. the highest frequency waves on the electromagnetic spectrum
  11. 23. A compound that consists of positive and negative ions
  12. 26. The condition of an atom is expressed by the number of electrons that the atom needs to reach its elemental form
  13. 27. A solution that had a great amount of solute
  14. 29. That portion of the electromagnetic spectrum detected as various colors by the human eye, ranging in wavelength from about 380 nm to about 750 nm.
Down
  1. 1. Matter is not created nor destroyed in any chemical or physical change
  2. 2. Formed when one or more electrons are transferred from one atom to another
  3. 3. Electrons on the outermost energy level of an atom
  4. 4. A chemical bond formed when two atoms share valence electrons
  5. 5. A chemical substance that is present at the start of a chemical reaction
  6. 6. Spectrum All of the frequencies or wavelengths of electromagnetic radiation
  7. 9. A graphical representation of how much solute will dissolve in water at various temperatures
  8. 10. the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
  9. 11. shorter than radio waves - used for cooking and communication
  10. 13. A solution that contains a small amount of solute
  11. 17. higher frequency than uv rays but lower than gamma rays
  12. 20. The amount of energy required to remove an electron from an atom
  13. 22. the lowest temperature that is theoretically possible
  14. 24. An atom or group of atoms that has a positive or negative charge.
  15. 25. the transfer of energy by electromagnetic waves
  16. 28. the property of a body that is a measure of its inertia