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Which of the following is a physical change? A. sawing a piece of wood in half B. burning a piece of wood C. rust forming on an iron fence D. a copper roof changing color from red to green
Question|Rated good
Asked 9/26/2012 10:55:21 AM
Updated 10/1/2014 4:08:37 AM
2 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by andrewpallarca [10/1/2014 4:06:52 AM], Confirmed by andrewpallarca [10/1/2014 4:06:53 AM]
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Original conversation
User: When a physical change in a sample occurs, which of the following does NOT change? A. shape B. temperature C. volume D. composition

User: Which of the following is a physical change? A. sawing a piece of wood in half B. burning a piece of wood C. rust forming on an iron fence D. a copper roof changing color from red to green

Weegy: Sawing a piece of wood in half is a physical change.
Expert answered|peanut213|Points 430|

User: Flammability is a material’s ability to burn in the presence of A. hydrogen. B. nitrogen. C. oxygen. D. carbon dioxide.

Question|Rated good
Asked 9/26/2012 10:55:21 AM
Updated 10/1/2014 4:08:37 AM
2 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by andrewpallarca [10/1/2014 4:06:52 AM], Confirmed by andrewpallarca [10/1/2014 4:06:53 AM]
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When a physical change in a sample occurs, composition does NOT change.
Added 10/1/2014 4:07:33 AM
This answer has been confirmed as correct and helpful.
3
Flammability is a material’s ability to burn in the presence of oxygen.
Added 10/1/2014 4:08:37 AM
This answer has been confirmed as correct and helpful.
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Ninety-nine percent of all the matter that can be observed in the universe exists as A. gases. B. plasmas. C. liquids. D. solids.
Weegy: Ninety-nine percent of all the matter that can be observed in the universe exists as plasmas. User: Matter that has a definite volume but no definite shape is a A. liquid. B. solid. C. gas. D. plasma. Weegy: Matter that has a definite volume but no definite shape is a liquid. User: If you move a substance from one container to another and its volume changes, the substance is a A. solid. B. liquid. C. gas. D. solution Weegy: If you move a substance from one container to another and its volume changes, the substance is gas. User: Forces of attraction limit the motion of particles most in A. a solid. B. a liquid. C. a gas. D. both b and c Weegy: Forces of attraction limit the motion of particles most in a solid. (More)
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