22. Ferrous Sulfate is one of the drug supplements that pregnant women should take during the period of fetal development. What element is the main component of this supplement? *
1 point
A. Boron
B. Iron
C. Sulfur
D. Xenon
23. Which of the following compound is commonly known as Aspirin? *
1 point
A. Sodium Chloride
B. Hydrochloric Acid
C. Acetylsalicylic Acid
D. Methane
24. Which should be used to separate the pebbles from the fine sand in a construction site ? *
1 point
A. Funnel
B. Filter paper
C. Sieve
D. Magnet
25. Which of the following is the most vital compound in the world? *
1 point
A. Water
B. Carbon Dioxide
C. Table Sugar
D. Ammonia
26. Oxygen and iron are elements (I). Protein and sugar are elements too (II). *
1 point
A. Both statements I and II are TRUE.
B. Both statements I and II are FALSE.
C. Statement I is FALSE while statement II is TRUE.
D. Statement I is TRUE while statement II is FALSE
27. A compound is composed of one atom (I). Elements is a single atom substance (II). *
1 point
A. Both statements I and II are TRUE
B. Both statements I and II are FALSE
C. Statement I is FALSE while statement II is TRUE
D. Statement I is TRUE while statement II is FALSE.
28. Airon Jay is fond of eating cereal drink even if he is already in grade 7. What compounds do Airon Jay has taken? I. Iron pyrophosphate III. Sodium bicarbonate II. Calcium chloride IV. Zinc Sulfate *
1 point
A. I and II only
B. I and III only
C. II and III only
D. I and IV only
29. Danica was assigned by her teacher to match compound with its constituent elements. Which do you think of her matched pairs are correct? I. Calcium chloride: calcium, chlorine II. Water: nitrogen, oxygen III. Carbon dioxide; carbon, oxygen IV. Salt: sodium, magnesium
1 point
A. I and II only have
B. I and III only
C. II and III only
D. I and IV only
30. Which of the following is used by chemists to represent compounds? *
1 point
A. Chemical symbols
B. Chemical formula
C. Alchemy symbols
D. Dalton's symbols