SUMMATIVE TEST 2

1. 1. Which type of chemical reaction involves two or more simple substances combining to form a single, more complex product?

• a. Decomposition reaction

• b. Synthesis reaction

• c. Combustion reaction

• d. Acid-metal reaction

2. In a decomposition reaction, what happens to the complex compound?

• a. It combines with another compound

•    b. It remains unchanged

•   c. It breaks down into simpler substances

• d. It forms a gas only

3. What is the key identifier of a combustion reaction?

• a. Only one reactant breaks apart

• b. Two substances combine to form one

• c. Oxygen is a reactant, producing CO₂ and H₂O

• d. A metal reacts with an acid

4. Which type of metabolism involves breaking down larger molecules into smaller ones?

• a. Anabolism

• b. Catabolism

• c. Synthesis

• d. Combination

5. 5. What is the primary energy currency of cells?

• a. Glucose

• b. Carbon dioxide

• c. ATP

• d. Glycogen

6. In an acid-carbonate reaction, what are the three products always formed?

• a. Salt, hydrogen gas, and water

• b. Salt, water, and carbon dioxide

• c. Salt, oxygen, and water

• d. Salt, nitrogen, and hydrogen

7. 7. Which of the following is an example of an anabolic reaction?

• a. Breaking down glucose for energy

• b. Digestion of food

• c. Protein synthesis from amino acids

• d. Fat breakdown during exercise

8. What is metabolism?

• a. Only the breakdown of food

• b. Only the building of molecules

• c. The set of all chemical processes in living cells

• d. The process of digestion alone

9. Which substance is commonly found in bleach as an active ingredient?
              

• a. Sodium bicarbonate

• b. Sodium hydroxide

• c. Sodium hypochlorite

• d. Sodium chloride

10. What is the function of surfactants in detergents?

• a. Add fragrance

• b. Lift dirt and grease

• c. Soften water

• d. Add color