3. Do you think that each sample occupied space? Write the reason(s) for your answer 4. How about smoke? Does it have mass? Does it occupy space? Explain your answer 5. Do you think that heat and light have mass do they occupy space? Explain your answer

Which of the following statements is not correct? a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously. d. Energy can be transferred.

Which of the following is not an example of an energy transformation? turning on a light switch solar panels at work formation of static electricity none of the above

Mercury Emissions by Continent By weight, coal does not contain much mercury, but we burn a lot of it. Several industries besides coal-fired power plants contribute substantially to atmospheric mercury pollution. FIGURE 2.13 shows mercury emissions by industry from different regions of the world in 2010. FIGURE 2.13 Global mercury emissions by sector, 2010. Which industry tops the list of mercury emitters? Which industry is next on the list?