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What is the minimum amount of energy needed for a reaction to take place? User: What is the minimum amount of energy needed for a reaction to take place? a. 100 joules c. Energy of reaction b. Activation energy d. 50 calories
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Updated 9/12/2014 7:04:31 PM
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ACTIVATION ENERGY is the minimum amount of energy needed for a reaction to take place.
Added 9/12/2014 7:04:31 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [9/13/2014 12:21:32 AM]
true or false. A change of color is a sign that a chemical reaction is taking place.
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Updated 2/21/2016 8:28:10 PM
1 Answer/Comment
A change of color is a sign that a chemical reaction is taking place. TRUE.

Added 2/21/2016 6:08:08 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [2/21/2016 8:28:00 PM]
true or false Adding a solute to a solvent will raise the freezing point of the solvent.
Weegy: Hello, may I know what kind of solvent you are referring to? User: true or false The particles in a suspension are larger than the particles in a solution but are still too small to be seen easily. (More)
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Updated 4/20/2015 1:52:51 PM
1 Answer/Comment
Adding a solute to a solvent will raise the freezing point of the solvent. FALSE.

Added 4/20/2015 1:52:38 PM
When a few spoonfuls of sugar are mixed into a cup of water, sugar is the User: A mixture containing particles that are too small to be seen easily but are large enough to scatter a light beam is called a
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Updated 4/20/2015 1:03:30 PM
1 Answer/Comment
When a few spoonfuls of sugar are mixed into a cup of water, sugar is the: Solute.

Added 4/20/2015 1:03:30 PM
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