10. Mixtures can be separated by physical methods while pure substances cannot be separated. Which of the following groups contain only pure substances?
A. Air, methane, sodium chloride
B. Ammonia, vinegar, silicon
C. Carbon dioxide, air, water
D. Iron, ethanol, calcium fluoride
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A. Air, methane, sodium chloride
B. Ammonia, vinegar, silicon
C. Carbon dioxide, air, water
D. Iron, ethanol, calcium fluoride
paki answer po
thank you
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Answer:
A. Air, methane, sodium chloride
Explanation:
Answer:
B. Ammonia, vinegar, silicon
Explanation:
not sure :((