Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 1. Which of these is an important characteristic of a refrigerant? 3. Which of these human activities has a big effect on the carbon cycle? 5. Plants are 45% carbon. Where does the carbon come from? A. a high heat of vaporization B. a high boiling point C. very high density A. burning fossil fuels B. damming rivers C. ocean fishing A. the air B. the water C. the soil 7. No Till farming uses herbicides to kill weeds instead of tilling or plowing the soil. What is a benefit of this practice? Grades 9-12 Matter Grades 9-12 Matter Grades 9-12 Matter 1. Which carbon compound is the main component of shells of birds, mollusks and corals? 3. Who predicts the properties of compounds from the properties of their atoms? 5. What component of the periodic table tells you how many electron shells or levels an atom has? A. CaCO3 B. CO2 C. CH4 A. physical chemists B. materials scientists C. biochemists CORRECT: A, A CORRECT: A, A A. rows B. columns C. atomic numbers A. reduced soil erosion B. development of herbicide resistance in weeds C. killing nearby native plants Grades 9-12 Matter 7. Which of these are heavy metals? A. lead, mercury, chromium B. oxygen, nitrogen, carbon C. helium, argon, krypton CORRECT: A. A CORRECT: A, A Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 2. Which mineral is common in granite and sand? 4. Which of these human activities has little effect on the water cycle? 6. What characteristice of a carbon atom makes it so important in molecules of living organisms? A. silicon dioxide B. calcium carbonate C. calcium apatite A. ocean fishing B. damming rivers C. pumping out ground water Grades 9-12 Matter A. it can form 4 bonds B. its bonds are hard to break C. it can form 3 bonds Grades 9-12 Matter 2. Who works to ensure the materials in buildings and bridges can withstand gravity, wind or earthquakes? A. structural engineers B. physical chemists C. materials scientists Grades 9-12 Matter 4. Which element is a byproduct of burning coal that affects neurological development in fetuses? A. mercury B. lead C. arsenic CORRECT: A, A 6. Which nitrogen compound is a fertilizer? A. NH3 B. N20 C. NO CORRECT: A, A CORRECT: A, A 8. Which of these is a good conductor of electricity? A. metals B. glass C. plastic Grades 9-12 Matter 8. What is happening to the pH of the ocean? A. it is going down B. it is going up C. it is staying the same CORRECT: A, A Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 9. What wavelengths do the bonds in a carbon dioxide molecule absorb and then emit? 11. What is the chemical formula for ammonia? 13. What kind of solution can dissolve shells, corals and limestone over time? 15. Which of these human activities has a big effect on the water cycle? A. a salty solution B. an acidic solution C. a basic solution A. off shore drilling B. burning fossil fuels C. ocean fishing Grades 9-12 Matter Grades 9-12 Matter 13. Who studies chemical processes in living organisms? 15. Where do heavy metals come from? A. physical chemists B. biochemists C. structural engineers A. they occur naturally in meteorites B. they occur naturally in the earth's crust C. they are created in labs A. infrared B. ultraviolet C. visible Grades 9-12 Matter 9. What is causing the change in the pH of the ocean? A. NH3 B. NO3 C. NO2 Grades 9-12 Matter 11. What is a benefit of scrubbing CO2 out of the exhaust of coal-fired power plants and sequestering it somewhere? A. increasing atmospheric CO2 dissolving into oceans B. ammonia runoff from agricultural fertilizers C. acid runoff from mining A. it keeps CO2 out of the atmosphere B. it uses 30% more energy C. it is more expensive CORRECT: A, A CORRECT: A, A Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 10. Who designs and manages systems for making chemicals in large amounts? 12. Which of these elements is the most common in the atmosphere? 14. How do refrigerant chemicals absorb heat? 16. What is the most common element (by mass) in the earth's crust? A. chemical engineers B. analytical chemists C. oil response specialists A. nitrogen B. oxygen C. argon Grades 9-12 Matter Grades 9-12 Matter 10. What term describes the process leading to dead zones through the addition of limiting nutrients like nitrogen and phosphorus? 12. Which carbon compound is the product of photosynthesis? CORRECT: B, B CORRECT: B, B A. nutrient enrichment B. acidification C. squestration CORRECT: A, A A. CH4 B. C6H12O6 C. CO2 CORRECT: A, B A. by changing from a solid to a liquid B. by changing from a liquid to a gas C. by changing from a gas to a liquid Grades 9-12 Matter 14. Which element, in hexavalent form, can cause cancer? A. arsenic B. chromium C. lead A. aluminum B. oxygen C. silicon Grades 9-12 Matter 16. The U.S. produces $2,300 of gross domestic product per ton of CO2 released. The European Union produces $3,700 per ton of CO2 released. How much more value does the EU get per ton of CO2 than the U.S.? A. 100% B. 60% C. 40% CORRECT: B, B CORRECT: B, B Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 17. No Till farming uses herbicides to kill weeds instead of plowing the soil. What is a drawback of this practice? 19. Humans are 18% carbon. Where does the carbon come from? 21. Who figures out how to make materials that are safer, cheaper and more effective for people to use? 23. What mineral are shells, corals and limestone made out of? A. less CO2 released from soil B. development of herbicide resistance in weeds C. reduced soil erosion A. water B. food C. the air A. environmental engineers B. analytical chemists C. oil response specialists Grades 9-12 Matter A. calcium apatite B. silicon dioxide C. calcium carbonate Grades 9-12 Matter Grades 9-12 Matter Grades 9-12 Matter 18. Which nitrogen compound is a major greenhouse gas? A. NO B. N20 C. NH2 19. What component of the periodic table tells you how many protons an atom has? A. rows B. atomic numbers C. columns CORRECT: B, B 21. What term describes the process of "locking up" a chemical or element so that it no longer cycles? A. nutrient enrichment B. sequestration C. acidification 20. What happens to calcium carbonate under low pH conditions? A. nothing B. it dissolves C. it precipiates CORRECT: C, B CORRECT: B, B CORRECT: B, B Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 18. What is the most common element (by mass) in animals? 20. Who cleans up oil spills? 22. What is the chemical formula for water? 24. Which of these human activites has little effect on the carbon cycle? A. hydrogen B. oxygen C. carbon A. chemical engineers B. oil response specialists C. environmental engineers A. NO3 B. H2O C. CO2 Grades 9-12 Matter Grades 9-12 Matter 17. Global nitrogen fertilizer use is 100 million metric tons. The world population is about 7 billion. What is the per capita use of nitrogen in kilograms? (1 metric ton = 1000 kg) A. about 1.4 kg B. about 14 kilograms C. about 140 kilgrams Grades 9-12 Matter 23. What is a drawback of scrubbing CO2 out of the exhaust of coal-fired power plants and sequestering it somewhere? A. it allows power plants to continue using coal B. it is uses 30% more energy C. it keeps CO2 out of the atmosphere Grades 9-12 Matter 22. What is a way that carbon dioxide is naturally sequestered? A. by adding iron to oceans B. by the growth of long-lived plants like trees C. by reacting it with metal oxides CORRECT: B, B 24. Which carbon compound is the most common greenhouse gas? A. CaCO3 B. C5H12O6 C. CO2 CORRECT: C, C CORRECT: B, B CORRECT: B, B A. burning fossil fuels B. plowing soil C. damming rivers Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 25. Which of these human activities has a big effect on the nitrogen cycle? 27. What characteristic of a nitrogen atom makes it so important in forming proteins? 29. Which of these is a physical means of separating the parts of a mixture? A. logging B. pumping out ground water C. burning fossil fuels A. its bonds are hard to break B. it can form 4 bonds C. it can form 3 bonds A. digestion B. oxidation C. centrifuging 31. Who designs and monitors systems for protecting the environment from hazards caused by construction or industry? Grades 9-12 Matter Grades 9-12 Matter Grades 9-12 Matter 25. Who creates things like biodegradable polymers? 27. How do humans come into contact with heavy metals? A. biochemists B. structural engineers C. materials scientists A. particles from outer space rain onto water supplies B. they are taken up from soil by plants people eat C. through their use in industry 29. What component of the periodic table tells you how many bonds an atom can form? CORRECT: C, C CORRECT: C, C A. rows B. atomic numbers C. columns A. chemical engineers B. analytical chemists C. environmental engineers Grades 9-12 Matter 31. Which organisms would be directly affected by ocean acidification? A. marine mammals B. penquins C. corals and mollusks CORRECT: C, C CORRECT: C, C Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter Grades 6-8 Matter 26. Which of these is a chemical means of separating the atoms in a compound from each other? 28. Which of these is a good electrical insulator? 30. What method would work the best for removing oil from water in an oil spill near a drinking water intake? 32. About how many naturally occuring elements are there? A. sifting B. centrifuging C. digestion Grades 9-12 Matter 26. Which element was only recently banned from global gasoline supplies because of its effect on the IQ of children? A. arsenic B. chromium C. lead A. metal B. water C. glass Grades 9-12 Matter 28. Which of these elements, in various compounds, causes dead zones to form near the mouths of major rivers? A. carbon B. oxygen C. nitrogen A. adding disperants B. leaving it alone C. skimming Grades 9-12 Matter 30. Where are the radioactive elements located on the periodic table? A. far left column B. far right column C. bottom rows CORRECT: C, C CORRECT: C, C CORRECT: C, C A. 92 B. 68 C. over 100 Grades 9-12 Matter 32. What term describes the trend of decreasing pH in the world's oceans? A. sequestration B. nutrient enrichment C. acidification CORRECT: C, C Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST Matter Grades 6-12 EARTH QUEST