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Matter and Change!

Understand the fundamental concepts of matter, physical and chemical changes, periodic table, and significant figures. Solve problems and learn key topics in 10 points each.

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Matter and Change!

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  1. Matter and Change!

  2. Matter Phys v. Chem Periodic Tbl Sig Figs Problems 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50

  3. Topic 1 – 10 Points QUESTION: • Define matter. (at least 2 of the 3) ANSWER: • mass, volume, exists as a solid, liquid, gas, or plasma

  4. Topic 1 – 20 Points QUESTION: • Which state of matter has the lowest amount of energy? ANSWER: • Solid

  5. Topic 1 – 30 Points QUESTION: • Any substance that has a definite composition is a ______________ . ANSWER: • chemical

  6. Topic 1 – 40 Points QUESTION: • Is oxygen gas (O2) a compound, element, homogeneous mixture, or heterogeneous mixture? ANSWER: • element

  7. Topic 1 – 50 Points QUESTION: • The smallest unit of an element. ANSWER: • an atom

  8. Topic 2 – 10 Points QUESTION: • Changing matter without changing its chemical identity. ANSWER: • Physical

  9. Topic 2 – 20 Points QUESTION: • Burning wood is an example of _________ . ANSWER: • Chemical change

  10. Topic 2 – 30 Points QUESTION: • List the five things that indicate a chemical change has occurred ANSWER: • smell, color, gas production, heat production, precipitate formation

  11. Topic 2 – 40 Points QUESTION: • Hot glass cracking in cold water is an example of _____________ . ANSWER: • Physical Change

  12. Topic 2 – 50 Points QUESTION: • The physical change from a solid to a gas is called _____________. ANSWER: • sublimation

  13. Topic 3 – 10 Points QUESTION: • The vertical columns are also known as _____________. ANSWER: • groups or families

  14. Topic 3 – 20 Points QUESTION: • Column 1 is known as the _________________ . ANSWER: • Alkali metals

  15. Topic 3 – 30 Points QUESTION: • Between metals and non-metals is a group called __________ . ANSWER: • Metalloids

  16. Topic 3 – 40 Points QUESTION: • The horizontal rows are also known as ____________ . ANSWER: • Periods

  17. Topic 3 – 50 Points QUESTION: • List four general properties of metals. ANSWER: • Luster, heat and electrical conductors, ductile, malleable

  18. Topic 4 – 10 Points QUESTION: 2,345 ANSWER: • 4 sig figs

  19. Topic 4 – 20 Points QUESTION: 67,000,000 ANSWER: • 2 sig figs

  20. Topic 4 – 30 Points QUESTION: 0.089040 ANSWER: • 5 sig figs

  21. Topic 4 – 40 Points QUESTION: Problem: 1818.2 lb x 3.23 ft Calc says: 5872.786 lbft What is the answer? ANSWER: • 5870 lbft Daily Double

  22. Topic 4 – 50 Points QUESTION: Problem: 1818.2 lb + 3.37 lb Calc says: 1821.57 lb What is the answer? ANSWER: • 1821.6 lb

  23. Topic 5 – 10 Points QUESTION: • What is the formula for density? ANSWER: • D = M/V

  24. Topic 5 – 20 Points QUESTION: • If there is a sample of gold with a volume of 10cm3 and a mass of 100 g, what is the density? ANSWER: • 10g/cm3

  25. Topic 5 – 30 Points QUESTION: • I have 35 mL of water and the density of water is 1.0 g/mL, what is the mass of the water? ANSWER: • 35 g

  26. Topic 5 – 40 Points QUESTION: • The density of magnesium is 1.74 g/mL. If I have a sample that weighs 48.34 grams, what is the volume? ANSWER: • 27.8 mL

  27. Topic 5 – 50 Points QUESTION: • Convert 2,780 μm into km and express the answer in scientific notation. ANSWER: • 2.78 x 10-6

  28. Final Jeopardy Question: You are given a piece of gold foil with a length of 7.32cm and a width of 14.9mm. You weigh the foil at .30 g. The density of gold is 19.3g/mL. What is the thickness of the foil? Answer: .30 / 19.3 = 0.016 cm3 0.016 / (7.32x1.49) = 0.0015cm

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