What is evidence of a chemical reaction?
Chemistry Review 2024

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Science
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6th - 8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Evidence of a chemical reaction includes changes such as color change, gas production, or formation of a precipitate. An example is burned sugar turning brown then black.
2.
FLASHCARD QUESTION
Front
What is the definition of 'products' in a chemical reaction?
Back
Products are the substances produced in a chemical reaction.
3.
FLASHCARD QUESTION
Front
Why is graphite soft?
Back
Graphite is soft because its atoms are arranged in a layered structure, allowing them to slide over each other easily.
4.
FLASHCARD QUESTION
Front
What are mixtures?
Back
Mixtures are different materials placed together but NOT chemically bonded.
5.
FLASHCARD QUESTION
Front
How are elements and compounds related?
Back
Elements are pure substances made of one type of atom, while compounds are made of at least two types of atoms bonded together.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A chemical reaction is a process where substances (reactants) are transformed into new substances (products) through the breaking and forming of bonds.
7.
FLASHCARD QUESTION
Front
What is the definition of 'reactants'?
Back
Reactants are the starting substances in a chemical reaction that undergo change.
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