Elements, Compounds, and Mixtures
Flashcard
•
Chemistry
•
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. Examples include hydrogen (H), oxygen (O), and gold (Au).
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is 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 mixture?
Back
A mixture is a combination of two or more substances that are not chemically bonded. Examples include air and salad.
4.
FLASHCARD QUESTION
Front
What is the difference between a pure substance and a mixture?
Back
A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.
5.
FLASHCARD QUESTION
Front
What is the chemical formula for sugar?
Back
The chemical formula for sugar is C12H22O11.
6.
FLASHCARD QUESTION
Front
Which of the following is an example of a compound: HCl, Cl, NaCl, CO2?
Back
HCl, NaCl, and CO2 are compounds; Cl is an element.
7.
FLASHCARD QUESTION
Front
What does the term 'homogeneous mixture' mean?
Back
A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.
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