Chemistry & Society Quiz 7

CHEMISTRY & SOCIETY QUIZ 7

Fats, Carbohydrates, Limiting Reactions

Name______

Date______Period__

Things you may find helpful:

1 gram Carbohydrate = 4 Calories1 gram Fat = 9 Calories

1 gram Protein = 4 Calories4000 Calories = 1 lb body fat

The amount of animal protein included in diets in the United States as compared to the rest of the world is best described by which of the following:

a)People in other countries eat more

b)People in other countries eat about the same

c)People in other countries eat less

d)None of the above

2. What are the three types of nutrients that provide Calories?

______, ______, ______

3. Provide 3 of the reasons you NEED fat in your diet (remember TEC-V-TEN)

______, ______, ______

4. How can you determine the difference between a saturated and an unsaturated fat?

5. Draw an illustration of the structural difference between Cis and Trans fatty acids.

6. Carbohydrates contain what 3 elements? ______, ______, ______

7. Fats contain what 3 elements? ______, ______, ______

PROBLEMS : Show your work and circle your answers for full credit

The equation for the synthesis of Mama Lehner’s Famous Fudge Brownies is given below:

8. If you are given 14 cups flour, 12 cups sugar, 16 cups cocoa, and 12 eggs – what ingredient runs out first (what is the limiting reactant)?

Using the amount of limiting reactant that you were given, how many brownies could you make?

The equation for the synthesis of Mama Hutson’s Famous Water is given below:

2H2+O22H2O

10. If you are given 20 moles of H2 and 12 moles O2 – what ingredient runs out first(what is the limiting reactant)?

11. Using the amount of limiting reactant that you were given, how many moles of water could you make?

12. How many grams of water would that be?

13. A Granola bar contains 180 Calories. It has 10 grams of Fat, (5 grams being saturated fat), 12.5 grams of Carbohydrates, and 10 grams of protein.

B) Determine the % of Calories from Fat _______

14. A cheeseburger contains 500 Calories. It has 15 grams of protein. What percentage of the total calories come from protein?

______

15. Mrs. Lehner has 10 lbs of extra body fat. How many Calories must she burn in order to rid herself of her lovehandles?

______

Label the following molecules as either: Saturated Fat, Monounsaturated Fat, Polyunsaturated Fat, Monosaccharide, Disaccharide, or Polysaccharide.