15. Its December and you want to heat up your pool. Ice is starting to form on it and you want it...
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15. It’s December and you want to heat up your pool. Ice is starting to form on it and you want it raised to 80 o F (27 o C) Using an electric heater, how much will it cost if 1 kilowatt- hour is 10 cents? The pool is 6.0 meters long, 4.0 meters wide and 2.0 meters deep. A. What’s the volume in cubic meters? ______ B. What is the volume in cubic centimeters?___________ C. What is the total grams of the water? _____________ A calorie is defined as the energy needed to raise one gram of water one degree Celsius. D. How many calories will it take to raise the pool water from freezing to 27 o C? _______________ E. 1 kilowatts hour=859,800 calories. How many kilowatt- hours will you need? ____________ F. How much will it cost to heat the pool from 32 o F(0 o C) to 80 o F (27 o C)? _______________ 14. Metric facts: 1 meter was originally defined as the distance from equator to north pole divided by? __________ One tenth of a meter is called a __________ How many centimeters (cm) in one meter? ______ How many millimeters (mm) in one meter? The volume of 1,000 cubic centimeters (cm 3 or cc) is called a liter. How many milliliters (mL) are in a liter? __________ A milliliter (mL) is what fraction of a liter? ________ A milliliter is how many cubic centimeters? _______ A cubic centimeter of water has the mass of how many grams? _____ A liter of water has the mass of how many grams? _____ 16. Aquick way to do an approximate conversion in your head for Fahrenheit to Celsius is to subtract 30, add 5, and then cut in half. For Celsius to Fahrenheit, double then add 25. Use this method for the following conversions. 37 o C to o F: ______ 25 o C to o F: ______ 10 o C to o F: ______ 80 o C to o F: ______ 62 o F to o C: ______ 103 o F to o C: ______ 73 o F to o C: ______ 122 o F to o C: ______
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Transcript of 15. Its December and you want to heat up your pool. Ice is starting to form on it and you want it...
15. It’s December and you want to heat up your pool. Ice is starting to form on it and you want it raised to 80oF (27oC) Using an electric heater, how much will it cost if 1 kilowatt-hour is 10 cents? The pool is 6.0 meters long, 4.0 meters wide and 2.0 meters deep.
A. What’s the volume in cubic meters? ______
B. What is the volume in cubic centimeters?___________
C. What is the total grams of the water? _____________A calorie is defined as the energy needed to raise one gram of water one degree Celsius.
D. How many calories will it take to raise the pool water from freezing to 27oC? _______________
E. 1 kilowatts hour=859,800 calories. How many kilowatt-hours will you need? ____________
F. How much will it cost to heat the pool from 32oF(0oC) to 80oF (27oC)? _______________
14. Metric facts:
1 meter was originally defined as the distance from equator to north pole divided by? __________One tenth of a meter is called a __________How many centimeters (cm) in one meter? ______How many millimeters (mm) in one meter? The volume of 1,000 cubic centimeters (cm3 or cc) is called a liter. How many milliliters (mL) are in a liter? __________A milliliter (mL) is what fraction of a liter? ________A milliliter is how many cubic centimeters? _______A cubic centimeter of water has the mass of how many grams? _____A liter of water has the mass of how many grams? _____
16. Aquick way to do an approximate conversion in your head for Fahrenheit to Celsius is to subtract 30, add 5, and then cut in half. For Celsius to Fahrenheit, double then add 25. Use this method for the following conversions.
37oC to oF: ______
25oC to oF: ______
10oC to oF: ______
80oC to oF: ______
62oF to oC: ______
103oF to oC: ______
73oF to oC: ______
122oF to oC: ______
Preservative/antioxidant Waste product Composition of casts Vinegar Active ingredient Sulfuric acid
Accelerates algae growth Component of gunpowder Barnyard waste product Aids digestive tract xrays
Preservative in dried fruit Used in rocket fuel Used in fireworks Causes blue-baby syndrome Instant heat pack
In cold remedy Thickener/pH adjuster Used in explosives In hair products Found in some seeds Combats bitter taste
Used in Nazi gas chambers Used to make film Preservative many are allergic to Found in fertilizer In cassava root
A B C D E F
G H I J
K L C M N O
P Q R S T U
V W X Y Z
17. Find pictures on the photo page that relate to the polyatomic ion listed. Find the number of pictures indicated. Place the letter from the photo next to
the ion.Ammonium(2): ____ ____
Chlorate(2): ____ ____
Hypochlorite(1): ____
Perchlorate(2): ____ ____
Acetate(3): ____ ____ ____
Nitrate(4): ____ ____ ____ ____
Nitrite(3): ____ ____ ____
Sulfite(2): ____ ____
Sulfate(2): ____ ____
Cyanide(2): ____ ____
18. Write the correct formula next to the name (use formulas in the box)
(SO3)2-
(CN)-
(SO4)2-
(ClO)-
(ClO2)-
(ClO3)-
Acetate: ___________
Ammonium: ________
Chlorate: ________
Hypochlorite: ________
Perchlorate: ________
Chlorite: ________
Cyanide: ________
Nitrate: ________
Nitrite: ________
Sulfite: ________
Sulfate: ________
(ClO4)-
(NO2)
(NO3)-
(NH4)+
(C2H3O2)-
19. Write the correct formula for the following compounds
Magnesium nitrate: ____________
Lithium nitrite: ___________
Magnesium chlorate: ____________
Hydrogen cyanide: ______________
Ammonium sulfate: ____________
Barium nitrite: ______________
Sodium sulfite: _______________
Calcium acetate: _________________
20. Original meaningsA. Atom is derived from “atomos,” what does that mean?
B. Electron comes from the Greek word for amber. Why?
C. Where does the word, Chemistry come from?
• Dry human skin ( ++++++ )Leather Rabbit furGlass Human hair Nylon Wool LeadSilk AluminumPaper Cotton ( + )
• Neutral• There are very few materials that do not tend to readily attract or give up electrons
when brought in contact or rubbed with other materials.• Steel ( 0 )• Collects negative charges• The following list of materials will attract electrons when brought in contact with
other materials, especially those that give up electrons. They are in the order of least apt to attract electrons to those that readily attract electrons.
• Wood ( - )Amber Hard rubber Nickel, Copper Brass, Silver Gold, Platinum Polyester Styrene (Styrofoam) Saran Wrap Polyurethane Polyethylene (like Scotch Tape) Polypropylene Vinyl (PVC) Silicon Teflon ( - - - - - - )
