Mid ter
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an element?
Back
An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together. It has a fixed composition.
3.
FLASHCARD QUESTION
Front
What is a heterogeneous mixture?
Back
A heterogeneous mixture is a combination of two or more substances that remain distinct and can be physically separated. The components can be seen and are not uniformly distributed.
4.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture in which the composition is uniform throughout. The different components are not visible and cannot be easily separated.
5.
FLASHCARD QUESTION
Front
What are IUPAC nomenclature rules?
Back
IUPAC nomenclature rules are standardized guidelines for naming chemical compounds, ensuring that each compound has a unique and descriptive name.
6.
FLASHCARD QUESTION
Front
What is the chemical formula for water?
Back
The chemical formula for water is H₂O, indicating it is composed of two hydrogen atoms and one oxygen atom.
7.
FLASHCARD QUESTION
Front
What is potassium oxide?
Back
Potassium oxide is a chemical compound with the formula K₂O, formed from the reaction of potassium with oxygen.
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