Vocab Unit 3 Science 7A

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Across
  1. 3. Transfer of energy through electromagnetic waves.
  2. 7. A synthetic material that is made by mixing together materials to form a new one.
  3. 9. The substance/s that form in a chemical reaction.
  4. 10. Change: The identity of a substance remains the same after one.
  5. 12. Copying nature.
  6. 13. Thermal energy being transferred.
  7. 15. Reaction: The process in which atoms are rearranged to produce different substances, changed identity.
  8. 16. A number placed in front of a chemical formula to show how many molecules of the substance are represented in the chemical equation.
  9. 18. The substances that form in a chemical reaction.
  10. 19. The original substance or substances in a chemical reaction.
  11. 22. A number below and to the right of the symbol.
  12. 24. It doesn't have the same number of each type of atom on both sides of the equation.
  13. 26. The original substance or substances in a chemical reaction.
  14. 28. Formula: A combination of chemical symbols and numbers that is used to represent a single unit of substance.
  15. 29. A reaction that gains thermal energy (gain).
  16. 30. A reaction that releases thermal energy (loss).
  17. 32. Thermal energy being transferred through liquids and gases.
  18. 33. Long molecules that are made up of five or more repeating units.
  19. 35. Renewable: Renewable material resources, but they must be managed so they do not ru of Renewable: The rate of which a resource can be renewable.
  20. 37. Result that follows naturally after the actions of a person or group.
  21. 38. Can be tiny, big, an event, or a phenomenon. See how they interact to form a unified whole.
  22. 40. Increasing the concentration of reactants can cause a reaction to occur faster.
Down
  1. 1. Human-made materials that are produced using natural or synthetic material.
  2. 2. When matter and energy cycle through Earth's systems, they are often transformed, changed identity.
  3. 4. A solid that is produced as a result of a chemical reaction in a liquid.
  4. 5. Matter and energy are conserved, to preserve.
  5. 6. A situation that involves giving something up in return for gaining something else.
  6. 8. A natural resource that cannot be replaced as quickly as it is used.
  7. 11. A resource that cannot be used up by humans.
  8. 14. A chemical reaction in which substances react with oxygen.
  9. 15. Materials that increase the rate of a chemical reaction by bringing together reactions.
  10. 17. Source: Substance, material, object or source of energy that is found in nature and that is useful or valuable to humans.
  11. 20. A material that slows the transfer of thermal energy.
  12. 21. Composed of 2 or more atoms bonded chemically.
  13. 23. A natural resource that can be replaced as quickly as it is used.
  14. 25. of Conservation of Matter: States that matter cannot be created or destroyed in ordinary chemical or physical changes.
  15. 27. Equation: Uses chemical formulas to model what happens in a chemical reaction.
  16. 31. (Physical & Chemical): Physical: identified without changing identity. Chemical: observed during or after chemical process.
  17. 32. A substance made up by two or more different types of atoms joined together by chemical bonds.
  18. 34. It has the same number of each type of atom on both sides of the equation.
  19. 36. Thermal energy being transferred through particles contact.
  20. 39. A material that speeds up the transfer of thermal energy.