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Unit 1 Review: Equipment, Safety & Classifying Matter

Unit 1 Review: Equipment, Safety & Classifying Matter. List four indications that a chemical reaction has occurred. Heat/Light Color Change Gas produced Precipitate. _______ does the dissolving in a solution. Solvent.

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Unit 1 Review: Equipment, Safety & Classifying Matter

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  1. Unit 1 Review:Equipment, Safety & Classifying Matter

  2. List four indications that a chemical reaction has occurred. • Heat/Light • Color Change • Gas produced • Precipitate

  3. _______ does the dissolving in a solution. • Solvent

  4. Which piece of equipment do you use for obtaining an accurate measurement of volume? • Graduated cylinder

  5. H2 + O2 H2OList the reactant(s) • H2, O2

  6. Identify: • Florence Flask

  7. Listan example of a homogeneous mixture. • Homogeneous = sugar water, salt water, air

  8. ____ is a form of energy • Heat

  9. How can you tell that an endothermic process is taking place? • Feels cold to the touch

  10. What is the hottest part of a Bunsen burner flame? • Top of inner cone

  11. What should you fill the wash bottles with? • Distilled water ONLY

  12. _______ is a pure substance that is made from atoms of two or more elements that are chemically combined Compound

  13. What is a chemical change? • Chemical change = results in a new substance with new properties

  14. Identify: • Evaporating dish

  15. H2 + O2 H2OList the product(s) • H2O

  16. What are some examples of improper lab attire? • Flip-flops • Long hair not pulled back • Baggy sleeves • Long jewelry • Shorts • No goggles

  17. Identify: • Crucible & Cover

  18. What are 2 types of pure substances? • Elements & Compounds

  19. What is the difference between a proper and improper Bunsen burner flame? • Proper is blue w/ 2 cones and an improper yellows at the top and an inner cone is not present.

  20. Identify: • Mortar & Pestle

  21. What is a physical change? • Physical change = does not change the identity of matter

  22. ______ is the study of the composition, structure and properties of matter • Chemistry

  23. You just made sugar water. What is the solute? • sugar

  24. What type of change would crumpling up a piece of paper be considered? Physical change

  25. What piece of equipment would you use as a cover to the evaporating dish? • Watch glass

  26. What type of change would burning a piece of paper be considered? • Chemical change

  27. _______ is a pure substance made of only one kind of atom • Element

  28. How can you tell that an exothermic process is taking place? • Feels hot to the touch

  29. Define “matter”. • Anything that has mass and takes up space

  30. ___________________ states that matter is neither created or destroyed by ordinary chemical or physical changes The Law Of Conservation Of Matter

  31. Chemical changes are always accompanied by what type of change? • Energy change!

  32. ______ is a mixture that is NOT uniform in composition throughout • Heterogeneous mixture

  33. ________ is a process that releases heat • Exothermic

  34. ________ gets dissolved in a solution • Solute

  35. What is the difference between a mixture and a compound? • Mixture = pure substances are physically combined • Compound = pure substances are chemically combined

  36. Suppose put an ice cube on your hand. In what direction does heat travel? Be specific • From your hand to the ice cube

  37. _________ is a solid that separates from a solution • Precipitate

  38. A homogeneous mixture can also be called a ______________? • Solution

  39. What does “aqueous” (aq) mean? • A compound is dissolved in water

  40. __________ is a mixture that is uniform in composition throughout • Homogeneous mixture

  41. Listan example of a heterogeneous mixture. • Heterogeneous = chicken soup, oil and water, sand, soil

  42. What is energy? The ability to do work or cause change

  43. ________ is a process that absorbs heat • Endothermic

  44. How is matter classified?...Draw the flow chart 

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