2. A substance which cannot be further reduced as to simpler substances is a/an A. compound B mixture C. element D. none of the above 3. It consists of two or more elements combined in definite proportions, A. compound B. mixture C. element D. none of the above 4. Components of seawater can be separated by physical means. Seawater is a/an A. compound B. mixture C. element D. none of the above 5. Which of the following is a heterogeneous mixture? A. cereal 8B. black coffee C. orange juice D. alcohol 6. Which of the following groups contain compounds only? A. air, water, gold C. carbonated drink, coffee, tea B. water, salt, sugar D. oxygen, nitrogen, iron 7. Which of the following group contain mixtures only? A. ice cream, salad, spaghetti C. water, air, coffee B. silver, gold, aluminum D. nitrogen, air, water 8. Sugar completely dissolves in water. Which is NOT TRUE in the following statements? A. Sugar is an element. C. Sugar dissolved in water forms a mixture B. Water is a compound. D. Sugar dissolved in water is a compound