1-5

=Time Length= 1 block = = =Warm Up= • Use the periodic table on your STAAR Chart to find the symbols for the following elements or polyatomic ions. //Use the periodic table on your STAAR Chart to find the symbols for the following elements or polyatomic ions. //


 * 1) 1. carbon _
 * 2) 2. carbonate _
 * 3) 3. bicarbonate _ (aka hydrogen carbonate)
 * 4) 4. aluminum _
 * 5) 5. ammonium _
 * 6) 6. phosphorus _
 * 7) 7. phosphate _
 * 8) 8. chlorine _
 * 9) 9. hypochlorite _
 * 10) 10. chlorite _
 * 11) 11. chlorate _
 * 12) 12. perchlorate _
 * 13) 13. chromium _
 * 14) 14. chromate _
 * 15) 15. dichromate _
 * 16) 16. nitrogen _
 * 17) 17. nitrite _
 * 18) 18. nitrate _
 * 19) 19. sulfur _
 * 20) 20. sulfite _
 * 21) 21. sulfate _

=__**Heat**__ **-** Quiz at beginning of class on block 2 over heat. =
 * Review the [|Notes], then answer the questions below.
 * 1) Calculate the number of Joules of heat needed to change 500 grams of water by 50 Celsius degrees. The specific heat of water is 4.184 J/g°C.
 * 2) Josh heats a material with 35.9 J of heat to raise the temperature of 47.0 grams of a material by 2.5°C. What is the specific heat?
 * 3) A 30-gram piece of iron is heated to 100°C and then dropped into cool water where the iron’s temperature drops to 30°C. How many Joules does it lose to the water? (The specific heat of iron is 0.45 J/g°C.)
 * 4) What is the specific heat of a 50 gram piece of metal that will change from 20°C to 22°C when 5000 J of energy is absorbed.
 * 5) How much energy was absorbed by the water in the swimming pool that contained 20000 grams of water which absorbed the sun’s energy to change in temp. from 13°C to 21°C? The specific heat of water is 4.184 J/g°C. =P
 * 6) How much energy is released by 57.8 grams of liquid water to go from 78°C to 22°C? The specific heat of water is 4.184 J/g°C.
 * 7) How much heat is needed to raise the temp of 5g of water from 0°C to 100°C? The specific heat of water is 4.184 J/g°C.
 * 8) How much heat is needed to raise the temp of 500g of water from 0°C to 100°C? The specific heat of water is 4.184 J/g°C.
 * 9) How much heat is needed to lower the temp of 500g of water from 100°C to 0°C? The specific heat of water is 4.184 J/g°C.
 * 10) How much heat is needed to lower the temp of 500g of iron from 100°C to 0°C? The specific heat of iron is 0.45 J/g°C.
 * 11) What is easier to cool, iron or water?

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