Elements, Compounds, Mixtures
Flashcard
•
Science
•
8th - 10th 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. For example, water (H2O) is a compound made of hydrogen and oxygen.
3.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances that are not chemically bonded. Each substance retains its own properties. Examples include air and salad.
4.
FLASHCARD QUESTION
Front
How is sodium chloride classified?
Back
Sodium chloride (NaCl) is classified as a compound because it is made up of sodium and chloride ions that are chemically bonded.
5.
FLASHCARD QUESTION
Front
What is the chemical symbol for hydrogen?
Back
The chemical symbol for hydrogen is H.
6.
FLASHCARD QUESTION
Front
What does a mixture of atoms represent?
Back
A mixture of atoms represents a combination of different types of atoms that are not chemically bonded, such as in a mixture of elements.
7.
FLASHCARD QUESTION
Front
What is a mixture of elements and compounds?
Back
A mixture of elements and compounds contains both pure elements and compounds that are not chemically combined, allowing each to retain its properties.
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