3. What is the best way to use in separating iron parts from a mixture?
A. Filter paper B. Magnet C. Water
D. Spoon
4. Which of the following uses evaporation as a means of separcting the components of the given mixture?
A. Iron Fillings and sand B. Pebbles and water C. Sand and gravel D. Sugar and water
5. Which of the following statements distinguishes pure substances from mixtures?
A. Can be separated by physical means. B. Consists of two or more kinds of malter. C. Have no specific solubility and densities. D. Have constant boiling temperature and melting temperature
6. A gaseous material has a strong smell evaporates quickly, particularly boils at 33 34°C and melts at -77.73°C. This matter can be classified as A. metal B. mixture C. solution D. substance
7. John wants to separate the marbles in a jar full of water. Which of the following is the BEST way to separate the mixture
A. Decantation B. Dissolving C. Evaporation D. Using a magnet
8. Which of the following will Kyle do to segregate the rubber bands of different colors
A. Decantation B. Evaporation C. Filtration D. Physical manipulation
9. What is the BEST way to use in separating iron fillings from a mixture?
A. Filter paper B. Magnet C. Water D. Spoon
10. Which of the following uses evaporation as a means of separating the componenis of the given mixture?
A. Oil and water B. Pebbles and sand C. Sand and gravel D. Salt and water
11. Which of the following materials will be used to separate a mixture of iron nails and sand?
A. Alcohol Lamp B. Filter paper C. Magnet D. Spoon
12. Which one is the best way to determine whether an unknown sarnple is a substance or a mixture?
A. Knowing its density B. Tasting the given sample C. Observing its physical appearance D. Testing its melting and boiling point
13. Sodium chloride dissolves in water very well. Which is NOT TRUE in the following statements
A. Water is a pure substance B. Sodium chloride is a pure substance. C. Dissolving sodium chloride with water produces a mixture. D. Dissolving sodium chloride with water produces a new substance.
14. What are the two (2) classes of matter?
A. Atom and molecule B. Element and compound C. Plant and animal cells D. Substance and mixture
15. Which is true regarding water
A. Compound of element B. Element of gases C. Mixture of gases D. Substances of gases
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Answer:
3. B
4. C
5. B
6. D
7. A
8. D
9. C
10. D
11. C
12. C
13. D
14. D
15. A
Explanation:
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Answer:
3. C.water
4. A. Iron fillings and sand
5. D.have constant boiling temperature and melting temperature
6. B.mixture
7. A.decantation
8. D.physical manipulation
9. A.filter paper
10. A.oil and water
11. D.spoon
12. C.observing its physical appearance
13. B.sodium chloride is a pure substance.
14. D.substance and mixture
15. A.compound of element
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