1. Why are carbon atoms able to form many organic compounds?

2. Veronica wants to change her nail polish because it does not look good with her new dress. What must she use to remove her fingers’ old nail polish?

3. Which are TRUE about the use of ethyl alcohol? 

i. medicine   ii. fuel    iii. disinfectant  iv. fertilizer

4. Which are TRUE about organic compounds?

I. Organic compounds contain calcium

II. Organic compounds contain carbon

III. Organic compounds can be produced by living organisms.

IV. Organic compounds can be produced artificially.

5. What is the common use of ethyne?

6. Methane is component of natural gas. What is the common use of methane?

7. How many types of bonds can a carbon atom form?

8. Marcy’s car stopped in the middle of the road. She found out that her car has ran out of fuel. Which compound must she buy?

9. To which group of hydrocarbon does the molecule with the structure H-C=C-H belong? H H H

10. Victor’s mother was cooking their lunch when she suddenly stopped and said, “Oh, the tank is already empty!” Then, her mother asked him to buy another tank. What did Victor’s mother ask him to buy?

11. What happens to the boiling point of hydrocarbon compounds when the number of carbon atoms increases?

12. Which hydrocarbon compound has a double bond in the molecule?

13. Why is it important to know the properties of common liquid materials?

14. Miguel wants to protect his bicycle’s parts from rusting fast. Which of the following materials do you think Miguel will use?

15. Paula wants to preserve a fish for her project in Biology class. What kind of compound should she use to preserve the animal?

16. Which alkene will most likely have the highest boiling point?

17. Marcela told her grandson, Manuel, never to play with gasoline. Why do you think she does not allow him to do it?

18. Emmanuel cut his finger accidentally when he was cutting his nails. He has to apply something on his wound so that it will not get infected. Which compound should he use?

19. Hydrocarbons with a type formula CnH2n+2 are called___________.

20. Salvador has to remove the red paint from the paintbrush so that he could still use it again next time. What organic compound should he use?

21. Which of the following products are made through natural food preservation?

I. Kimchi  II. Atsara  III. Tinapa and Tuyo  IV. Softdrinks

22. Fruit jam uses honey or table sugar in food preservation. What is the role of honey and table sugar in preserving fruits?

23. Atsara, is a pickle made from grated unripe papaya popular in the Philippines, uses vinegar as one of the main ingredients. How vinegar preserves the food?

24. Icing, peanut butter and whipped cream are products which contains oil and water as main ingredients. For these products to attain a perfect fat structure and air distribution necessary for the smooth eating and good meltdown characteristics, what additive helps the two immiscible liquids blend to create an appealing appearance?

25. Which of the following is a natural sweetener?

26. Which of the following substances does not belong to the group?

27. Which of the following food is a product of artificial preservation?A. AtsaraB. HotdogsC. PicklesD. Tinapa

28. Which of the following is true about sweeteners?

1. Which of the following products is not made through natural food preservation?

I. Kimchi     II. Pickled Vegetables 

III. Energy Drink    IV. Soda

30. Honey is used in food preservation. Which of the following statements is true about honey?