4. Which of the following substances is NOT a compound?
A. Carbon dioxide
B. Hydrogen
C. Salt
D. Sugar
5. Which of the following describes an element?
A. They are the simplest substance.
B. It is composed of two or more types of atoms.
C. It can be separated through a chemical process.
D. It can be broken down into other types of substances.
6. Which of the following statements correctly describes a compound?
I. It can be broken down into simpler type of matter by chemical means.
II. It has unique properties that are different from the properties of its individual elements.
III. It is composed of atoms of two or more elements that bond together.
IV. It is composed of atoms of the same kind.
A. I, II, III only
B. I, II, IV only
C. II, III, IV only
D. All of the above. duen gas combine?
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Answer: 4. B
5. A
6. C
7. D
8. B
9. B
10. C
11. Element
12. Element
13. Compound
14. Compound
15. Element
Explanation: