Question and answer
Which of the following is NOT a clue that a chemical change has occurred? A. change in color B. production of a gas C. formation of a precipitate D. change in shape
Change in shape is NOT a clue that a chemical change has occurred.
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Expert answered|andrewpallarca|Points 42529|
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Asked 9/11/2014 12:03:25 PM
Updated 9/11/2014 12:31:41 PM
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This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [9/11/2014 12:31:41 PM]
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In “The Black Cat”, who does the narrator accidentally kill? A. His wife B. Himself C. His friend D. The cat
Question
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Updated 9/10/2014 1:19:08 PM
1 Answer/Comment
In “The Black Cat”, the narrator accidentally killed his wife.
Added 9/10/2014 1:19:08 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [9/10/2014 1:22:00 PM]
To create hydrogen and oxygen from water, you would need to perform which type of reaction? A. Synthesis B. Decomposition C. Single replacement D. Double replacement
Question
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Updated 1/23/2016 7:09:53 AM
1 Answer/Comment
To create hydrogen and oxygen from water, you would need to perform a "decomposition" type of reaction.
Added 1/23/2016 7:09:53 AM
This answer has been confirmed as correct and helpful.
Confirmed by selymi [1/23/2016 7:37:52 AM]
In the compound MgCl2, the subscript 2 indicates that A. there are two magnesium ions for each ion of chlorine B. the chloride ion is twice the size of the magnesium ion. C. magnesium and chlorine form a double covalent bond. D. there are two chloride ions for each magnesium ion.
Weegy: A. there are two magnesium ions for each ion of chlorine (More)
Question
Updated 9/16/2014 9:30:22 AM
1 Answer/Comment
In the compound MgCl2, the subscript 2 indicates that there are two chloride ions for each magnesium ion.

Added 9/16/2014 9:30:22 AM
This answer has been confirmed as correct and helpful.
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