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Only after the measurement of the reaction rate.
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How can you tell when a chemical has reacted?
When there is a change in its chemical/physical properties. A chemical reaction involves the changing of the object's chemical make up.
What reaction rates do not tell you how fast?
substances are changing state
How can one tell how much reactant will be used in a reaction?
from a balanced chemical equation
How can you tell that a chemical reaction occurred from the copper sulfate?
You have to notice what happens during the reaction and what products have been obtained.
What does the coieffecient in a chemical equation tell you?
The number of that type particle involved in the reaction.
What are the 3 thing that tell us if a chemical reaction has take place?
Smoke, explosion and changing colour
What will tell you the efficiency of a chemical reaction?
You need to calculate the yield of the reaction.
What does a positive delta H tell about reaction?
This is an endothermic chemical reaction.
What does rate tell you?
How fast a reaction is going
How can you tell the difference between a chemical reaction and not a chemical reaction?
A chemical reaction will do the following; Change colour Create smoke A non chemical reaction (Physical Reaction) will do the following; Change State Be able to change back to the original materials
What can chemical equations tell you about a chemical reactions?
Chemical equations describe the products and reactants in a chemical reaction.
What does the potential energy diagram of a chemical reaction tell you?
Whether the reaction is endothermic or exothermic
How can you tell there is a chemical reaction when iron rusts?
Because it is not a physical change it is a chemical change.
Did a chemical reaction take place if a solid precipitate formed?
Yes!! You mixed liquids together and a solid was formed, certainly a chemical reaction. Depending on the reactants you could most likely tell which atoms joined to make the precipitate.
Chemical properties tell you how something?
Chemical properties tell you how the element or compound is going to react during a chemical reaction.
How can you tell when a chemical has reacted?
When there is a change in its chemical/physical properties. A chemical reaction involves the changing of the object's chemical make up.
How can you tell fools gold from gold by using a chemical reaction?
With magnets.
