Question and answer
Which of the following is a clue of a chemical change? A. iron changes color when heated B. gas bubbles form in boiling water C. balls of wax form when melted wax is poured into ice water D. a gas forms when vinegar and baking soda are mixed
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A clue of a chemical change is: a gas forms when vinegar and baking soda are mixed.
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Asked 11/18/2015 8:31:00 AM
Updated 11/18/2015 8:43:57 AM
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This answer has been confirmed as correct and helpful.
Edited by jeifunk [11/18/2015 8:43:56 AM], Confirmed by jeifunk [11/18/2015 8:43:57 AM]
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If a material contains three elements joined in a fixed proportion, it is a(an) A. mixture. B. solution. C. atom. D. compound.
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Updated 11/18/2015 8:43:06 AM
1 Answer/Comment
If a material contains three elements joined in a fixed proportion, it is a: COMPOUND.
Added 11/18/2015 8:43:06 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [11/18/2015 9:44:25 AM]
Which of the following materials is useful for making molds because it has a low melting point? A. wood B. metal C. clay D. wax
Weegy: Wax is useful for making molds because it has a low melting point. (More)
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Updated 11/18/2015 10:06:08 AM
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A substance that has high reactivity A. easily combines chemically with other substances. B. burns in the presence of water. C. displaces dissolved oxygen. D. has a high boiling point.
Weegy: A substance that has high reactivity easily combines chemically with other substances. (More)
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Updated 11/18/2015 10:01:40 AM
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