Questions: Select the (1) term that BEST matches the description: A substance * 2 points present at the beginning of a chemical reaction that is chemically changed by the reaction catalyst chemical reaction decomposition precipitate product reactant

Select the (1) term that BEST matches the description: A substance * 2 points present at the beginning of a chemical reaction that is chemically changed by the reaction catalyst chemical reaction decomposition precipitate product reactant
Transcript text: Select the (1) term that BEST matches the description: A substance * 2 points present at the beginning of a chemical reaction that is chemically changed by the reaction catalyst chemical reaction decomposition precipitate product reactant
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Solution

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Solution Steps

Step 1: Identify the Description
  • The description provided is "A substance present at the beginning of a chemical reaction that is chemically changed by the reaction."
Step 2: Analyze the Options
  • Catalyst: A substance that speeds up a chemical reaction without being consumed or chemically changed.
  • Chemical Reaction: A process that involves the rearrangement of the molecular or ionic structure of a substance.
  • Decomposition: A type of chemical reaction where one substance breaks down into two or more substances.
  • Precipitate: A solid that forms and settles out of a liquid mixture during a chemical reaction.
  • Product: A substance that is formed as a result of a chemical reaction.
  • Reactant: A substance present at the beginning of a chemical reaction that is chemically changed by the reaction.
Step 3: Select the Best Match
  • Based on the analysis, the term that best matches the description is Reactant.

Final Answer

\(\boxed{\text{Reactant}}\)

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