g10 lessons

• If someone is talking about fat in their diet, they are likely referring to the most common type of lipid present in our foods and in our bodies. What are these lipids? triglycerides

   a. Lecithin  b. Phospholipids  c. Steroids  d. Triglycerides
• Which of the following is an important component in cell membranes? unsaturated fats

  1. Triglycerides b. Phospholipids c. Saturated fats d. Unsaturated fats
• 3. Which of the following has been linked to an increased risk of heart disease? saturated fats

   a. Lecithin b. Saturated fats  c. All unsaturated fats d. Polyunsaturated fats
• Where can you find the lipids the most? oils/fats/waxes

  1. Bread b. Chocolate c. Meat d. Oils/fats/waxes
• 5. Many lipids are formed by the attachment of three: Fatty acids to glycerol Hydroxyl groups to glycerol. What type of hydrocarbon compounds glycerol belongs? aldehyde

  1. Acetone b. Alcohol c. Aldehyde d. Ketone
• What do you call a fat that is very important during insulation? cholesterol

  1. Cholesterol B. Glycogen c. starch d. triglycerides
• 2. Which types of atoms mainly composes the lipids? C,H,O

   A. C,H,O B. C,H,N C. C,O,N D. O,H,N
• 3. What group of compounds are fats, waxes and oils? lipids

  1. carbohydrates B. lipids C. nucleic acid D. protein
• 4. Junk foods contained fatty acids which makes the heart unhealthy. What kind of fat is it? saturated fat

   A. Healthy fat B. Saturated fat C. Unhealthy acid D. Unsaturated fat
• 5. A fish oil cannot cause plaque build-up because they contain what kind of fat? unsaturated fat

   A. Healthy fat B. Saturated fat C. Unhealthy acid D. Unsaturated fat
• The law of conservation of mass states that matter is neither created nor _______. destroyed

  a.rearranged b. destroyed c. transferred d. changed
• In a closed system, a chemical reaction takes place. The mass of the reactants in the beginning of the reaction is 25g. At the end of the reaction, what must the mass be to follow the law of conservation of mass? 25 grams

   a. 25 grams b. 30 grams c. 40 grams d. 50grams
• How is a chemical equation balanced? adding coefficients

  a.changing subscripts b. erasing elements as necessary c. adding coefficients d. adding elements as necessary
• When the equation, Fe + Cl2 FeCl3 is balanced, what is the coefficient for Cl2? 3

  a.1 b. 2 c. 3 d. 4
• 5. What are the missing coefficients for the skeleton equation below? NH3 + O2 N2 + H2O. 4,3,2,6

   a. 4,3,2,6 b. 2,1,2,3 c. 1,3,1,3 d. 2,3,2,3
• 1. There are two reactants in a chemical equation, and one product. The mass of the product is 30g. The mass of the first reactant is 17g. What must the mass of the second reactant be, if the equation is to follow the law of conservation of mass? 13 grams

   a. 10 grams b. 11 grams c. 12 grams d. 13 grams
•  2. How is a chemical equation balanced? adding coefficients

   a. changing subscripts b. erasing elements as necessary c. adding coefficients d. adding elements as necessary
• 3. Which of the following is true for a balanced chemical equation? The number of various atoms is equal in both sides

  a.The number of various atoms is equal in both sides b. The number of various atoms is more in left side