What is a combustion reaction?
Balancing Chemical Equations and Types of Reactions

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat. Example: C2H4 + 3 O2 → 2 CO2 + 2 H2O.
2.
FLASHCARD QUESTION
Front
What are common signs that a chemical change has occurred?
Back
Common signs include a change in color, the production of gas (bubbling), and a change in temperature.
3.
FLASHCARD QUESTION
Front
How does heating affect the rate of a chemical reaction?
Back
Heating usually increases the rate of a chemical reaction, causing it to happen faster.
4.
FLASHCARD QUESTION
Front
What is the rule for balancing chemical equations?
Back
When balancing equations, you can only add, change, or remove coefficients, not subscripts or elements.
5.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved.
6.
FLASHCARD QUESTION
Front
What is the difference between a reactant and a product?
Back
Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.
7.
FLASHCARD QUESTION
Front
What is a synthesis reaction?
Back
A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: A + B → AB.
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