124 134 • Name:

1. The spar mixer uses 2200 Watts of power at 220 Volts.
   
   1. __________ _____ Calculate the current i for the spar mixer.
   2. __________ _____ Calculate the resistance R for the spar mixer.
2. A Whirlpool dryer uses 26 amps of current at 240 volts.
   
   1. __________ _____ Calculate the resistance R for the dryer.
   2. __________ _____ Calculate the power P for the dryer.
   3. __________ _____ How long can the dryer run on a single kilowatt (1000 Watts)?
   4. __________ _____ If cash power is $0.50 per kWh, calculate the cost to run the dryer for eight hours.
3. A Haier household refrigerator uses 1.2 amps of current at 115 volts.
   
   1. __________ _____ Calculate the resistance R for the refrigerator.
   2. __________ _____ Calculate the power P for the refrigerator.
   3. __________ _____ How long can the refrigerator run on a single kilowatt (1000 Watts)?
4. 1. __________ What is the atomic number of Zn?
   2. __________ What is the atomic mass of Zn?
   3. __________ How many protons does Zn have?
   4. __________ How many neutrons does Zn have?
   5. __________ How many electrons does Zn have?
   6. ____________________ Zn was an element tested in the electrical conductivity, what is the full name for Zn?
5. Remember that the number of neutrons equals or exceeds the number of protons. The number of protons cannot exceed the number of neutrons in a stable element. Thus the more numerous nucleons are the neutrons.
   1. _______________ Looking only at the atomic diagram, determine the atomic number of the atom depicted.
   2. _______________ Looking at the diagram, what is the atomic mass for the atom?
   3. _______________ Looking at the diagram and the chart on the wall, what is the one or two letter chemical abbreviation for this element?
   4. _______________ Looking at the diagram and the chart on the wall, what is the full name for this element?
6. _______________ What is the common name for compound with the formula H₂O?
7. _______________ In general, what color do acids tend to turn floral pigment fluids?
8. _______________ In general, what color do bases tend to turn floral pigment fluids?
9. _______________ Are lime fruits acid, base, or neutral?
10. _______________ Is vinegar an acid, base, or neutral?
11. _______________ Is cream of tartar an acid, base, or neutral?
12. _______________ Is water an acid, base, or neutral?
13. _______________ Is baking soda an acid, base, or neutral?
14. _______________ Is ammonia an acid, base, or neutral?
15. _______________ Is a bar of hand soap an acid, base, or neutral?
16. _______________ Is laundry detergent an acid, base, or neutral?
17. _______________ Is bleach an acid, base, or neutral?

Voltage V = current i * resistance R |•|•|•| Power P = iV