During a physical change, the mass is conserved because it isn't permanently changed, like a chemical change. A chemical change would be something like burning a piece of paper, and a physical change would be something like cutting up pieces of paper (can be put back together).
The correct answer is 23
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Answer:
Some answers are:
Plan, blueprint, drawing, sketch, outline, map, plot, diagram, delineation, draft and deciption
Answer: ask yourself one question each day