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Science

Chapter 7

QuestionAnswer
The substances that are present before a chemical reaction takes place are called Reactants
Which of the following does NOT state what the arrow means in a chemical equation? A. forms B. Products C. Conserves D. Yields C. Conserves
The coefficients in a balanced chemical equation always can express the ratio of: Balanced reactants and products
Which of the following is NOT always true about a synthesis reaction? A. One product is formed B. There is only one reactant C. The general formula s A + B (arrow) C D. A reactant might be a compound or it might be an element C. The general formula is A + B (arrow) C
The total amount of energy before and after a chemical reaction is the same. Thus, energy is Conserved
In general, if the temperature of a chemical reaction is increased, reaction rate Increases
In a compound, chemical energy is contained in the Electrons
A log is burning in a fireplace. If the amount of oxygen reaching the log is decreased, which is true? A. The reaction rate increases B. The reaction rate decreases C. The reaction rate remains the same D. The reaction rate depends only on temperature The reaction rate decreases
Created by: ejhauser
 

 



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