What happens to atoms during a chemical reaction?
Chemistry Review 2024

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Science
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6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Atoms separate, rearrange, and new bonds form.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A substance made of two or more different elements that are chemically bonded, e.g., water (H2O).
3.
FLASHCARD QUESTION
Front
What is evidence of a chemical change?
Back
The reaction produces heat.
4.
FLASHCARD QUESTION
Front
What are reactants in a chemical reaction?
Back
The starting substances that undergo change, e.g., 1 sodium and 2 chlorine in the reaction to form sodium chloride.
5.
FLASHCARD QUESTION
Front
What does the arrow in a chemical equation represent?
Back
It means 'forms', 'yields', or 'produces'; all of the answer choices are correct.
6.
FLASHCARD QUESTION
Front
What is the definition of a chemical reaction?
Back
A process where substances (reactants) transform into new substances (products).
7.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.
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