21. If Jane wants to get the iron filings out of some sand, what could she use to separate these two solids?
A. filter paper
B. evaporation
C. decanting
D. magnet
22. Which of these is a pure substance? A. bread
B. table salt
C. garden soil
D. sea water
23. What is the simplest form that cannot be broken down to anything simpler?
A. element
B. solution
C. compound
D. colloids
24. Which of the following is a homogeneous mixture?
A oil and water
B. halo-halo
C. sand and water
D. air
25. This type of mixture contains two or more substances that are visibly distinguishable.
A. homogeneous
B. solution
C. heterogeneous
D. suspension
26. A substance which consists of two or more elements which have been combined chemically is called
A element
B. compound
C. mixture
D. atom
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Answer:
21. D. Magnet
22. B. Table Salt
23. A. Element
24. D. Air
25. C. Heterogeneous
26. B. Compound
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