Math State Testing Week 8th

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Across
  1. 4. oxidation that occurs inside the cells of living organisms in order to create energy
  2. 7. have positive electrical charges
  3. 12. extremely tiny and have almost no mass
  4. 13. the building blocks of life
  5. 14. occurs when a substance changes into another kind of substance, and the change can’t be reversed
  6. 20. the quantity of matter something has
  7. 22. splitting an atom’s nucleus
  8. 23. iron oxide molecules formed when oxygen and iron combine
  9. 24. living things
  10. 25. an atom with a positive or negative electrical charge
  11. 28. matter with the least amount of energy
  12. 29. having one particular task or purpose
  13. 31. the energy of motion; if the rock begins rolling downhill, its potential energy will have changed into kinetic energy
  14. 33. the process of combining chemically with oxygen
  15. 34. a weight hanging from a string that swings back and forth
  16. 36. a soft, flexible layer; a cell membrane allows some fluids and solids to pass through it
  17. 37. developed or changed over time
Down
  1. 1. this energy released by isotopes
  2. 2. are neutral
  3. 3. the matter may look different and change, but is still the same at an atomic level
  4. 5. the structures inside a cell that do certain tasks
  5. 6. stored energy that is created by the force of gravity; for example, a rock on a hill has potential energy
  6. 8. one complete swing back and forth
  7. 9. a process that produces a chemical change
  8. 10. the organelle that is in charge of reproduction and makes proteins
  9. 11. matter where particles have the most energy and spread out
  10. 15. substances that increase the speed of chemical reactions
  11. 16. matter where particles have more energy and can move more
  12. 17. energy is neither created nor destroyed, it just changes forms; this is the First Law of Thermodynamics
  13. 18. squeeze together or become smaller
  14. 19. the natural disintegration of an isotope’s nucleus
  15. 21. the compound that gives vinegar its smell and taste
  16. 26. the central part of an atom that contains protons and neutrons
  17. 27. atoms that have more or less neutrons than other atoms of the same element
  18. 30. ready to break apart, change, or react
  19. 32. a very steady rate at which radioactive decay happens
  20. 35. when particles are closer together