All the following are examples of chemical changes except
A) aging.
B) photosynthesis.
C) fermentation.
D) perspiration.
E) respiration.
Correct Answer:
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Q1: Two types of pure substances are
A)compounds and
Q2: A sample of magnesium is burned in
Q4: The state of matter for an object
Q5: Which of the following statements concerning experiment
Q6: Which of the following is a mixture?
A)a
Q7: The state of matter for an object
Q8: Which of the following statements is not
Q9: A 7.45 g sample of calcium carbonate
Q10: A clear colorless liquid in an open
Q11: All of the following are homogeneous mixtures
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