Why does sodium chloride cannot conduct electricity in its solid form? A. ions in its structure are in fixed positions.

b. It contains no free electrons.

c. It has a giant covalent molecular structure.

d. Ions in its structure only have single negative and single positive charges.

Match the words or actions and their definition. 1. the rate of doing work 2. a machine that changes motion 3. the force that is used to generate electricity 4. 550 foot-pounds per second 5. the force that makes things fall toward the earth 6. work in > work out 7. metric measurement of work 8. the product of force times distance water falling from a dam newton-meter gravity work windmill power the work principle 1 horsepower