What is an Element?
Law of Conservation & Chemical Change Review

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Chemistry
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A pure substance that cannot be broken down into simpler substances by chemical means. Examples include Aluminum (Al), Oxygen (O), and Gold (Au).
2.
FLASHCARD QUESTION
Front
What is a Compound?
Back
A substance formed when two or more elements are chemically bonded together. Examples include Water (H2O) and Carbon Dioxide (CO2).
3.
FLASHCARD QUESTION
Front
What is a Homogeneous Mixture?
Back
A mixture that has a uniform composition throughout. Examples include saltwater and air.
4.
FLASHCARD QUESTION
Front
What is a Heterogeneous Mixture?
Back
A mixture that consists of visibly different substances or phases. Examples include salad and sand.
5.
FLASHCARD QUESTION
Front
What are Reactants in a chemical reaction?
Back
The starting materials that undergo a chemical change in a reaction.
6.
FLASHCARD QUESTION
Front
What are Products in a chemical reaction?
Back
The substances that are formed as a result of a chemical reaction.
7.
FLASHCARD QUESTION
Front
What is a Double Displacement Reaction?
Back
A type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: 3 HBr + Al(OH)3 -> 3 H2O + AlBr3.
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