15. What do you call the information gathered during experiments? *
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A. Data
B. Theory
C. Conclusion
D. Hypothesis
16. Which step follows after formulating and objectively testing the hypotheses? *
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A. Interpreting results
B. Stating conclusions
C. Conducting experiments
D. Making observations and collecting data
17. What step should be done first before you start an investigation? *
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A. Analyzing data
B. Drawing conclusions
C. Testing a hypothesis
D. Recognizing and identifying the problem
18. Compounds are formed when two or more _____________ are combined. *
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A. Elements
B. Minerals
C. Nutrients
D. Food products
19. Which of the following ingredients is an element? *
1 punto
A. Calcium
B. Carbohydrate
C. Oil
D. Protein
20. The following are constituent elements of sodium glutamate, EXCEPT *
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A. Carbon
B. Hydrogen
C. Iron
D. Sodium
21. Boron, Carbon, Nitrogen, and oxygen are examples of _______________. *
1 punto
A. Compounds
B. Elements
C. Ingredients
D. Nutrition facts
22. How do you compare elements from compounds? *
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A. Elements are single atom substances.
B. Compounds are composed of one molecule.
C. Compounds are composed of two or more molecules.
D. Compounds are composed of two or more compounds.
23. Why is it important to be familiar with elements and compounds? *
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A. To classify them accordingly.
B. To tell others you know them.
C. To enumerate elements and compounds.
D. To be praised by others of knowing them.
24. 24. How many types of elements are there in SO₃ (Sulfur Trioxide)? *
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A. 1
B. 2
C. 3
D. 4
25. Carbon is considered an element, while carbon dioxide is considered compound. Why do you think so? *
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A. gas at room temperature
B. made of two different elements
C. given off by green plants
D. release by human though exhalation
26. What element is responsible in maintaining a healthy thyroid gland? *
1 punto
A. Gold
B. Hydrogen
C. Iron
D. Iodine
27. Which of the following compound is found in the stomach? *
1 punto
A. Calcium Carbonate
B. Hydrochloric Acid
C. Sodium Chloride
D. Ammonia
28. Ferrous Sulfate is one of the drug supplements that pregnant women should take during the fetal development. What element is the main component of the supplement? *
1 punto
A. Boron
B. Iron
C. Sulfur
D. Xenon
29. Which of the following is the compound name of the given chemical formula NaCl? *
1 punto
A. Sand
B. Vinegar
C. Table salt
D. Alcohol
30. Table salt is one of the most commonly used compounds that gives flavor to our food. What is the composition of table salt? *
1 punto
A. One atom of Sodium and one atom of Chlorine.
B. Two atoms of Sodium and two atoms of Chlorine.
C. Three atoms of Sodium and three atoms of Chlorine
D. Four atoms of Sodium and four atoms of Chlorine.