HOW SMART ARE YOU? CAN YOU ANSWER THESE QUESTIONS?

1. Explain why we use rules of uncertainty for significant figures in scientific measurements and calculations?



2. What algebraic principal allows dimensional analysis to convert units using equality statements? In other words, what is the mathematical reasoning behind converting units?



3. To better illustrate the use of metric prefixes, I will give you four different lengths; you tell me which of the metric prefixes along with meter best describes them.

EX. The diameter of a penny would be best described as a cm.

A. Football field B. Thickness of a dime

C. Thickness of a hair D. Length of a car



4. Why is the metric system better than the English system of measurements?



5. Explain the difference between a Calorie, a calorie, and a joule.



6. Explain the difference between Kelvin, Celsius, and Fahrenheit. Your answer must include a discussion of what they are based on melting and boiling points of water.



7. You hurt your knee during a football game and your trainer put an icepack on it. Describe the system and surroundings involved in the action.



8. Describe how lake effect snow is cause by specific heat.



9. Discuss whether ice melting on a table is an exothermic or endothermic reaction, or if there is no reaction.



10. Describe all of the different changes taking place after you take a piece of ice at -40 degrees C, place it in a beaker and cook it using the Bunsen Burner until it turns to steam at 100 degrees C. Explain how you would calculate the heat involved in this reaction.



11. Convert 5.0 ounces to decigrams.



12. How many cm^3 or 1.234 X 10^4 mm^3?



13. How many food calories are in 6.12 joules?



14. If 74 calories of energy are added to 50 g of water at 27 degrees C, what is the final temp of the water?HOW SMART ARE YOU? CAN YOU ANSWER THESE QUESTIONS?
I'm very smart because I've studied, done my own homework and not cheated. If you do the same, you too can be very smart. To demonstrate how smart I am, I'm not falling for your pathetic attempt to gull us into doing your homework.



With any luck at all, the rest of the people up here are all that smart too!HOW SMART ARE YOU? CAN YOU ANSWER THESE QUESTIONS?
wow i guess im not smart cuz i dont get any of these

good luck