Elements, Compounds, and Mixtures
Flashcard
•
Science
•
6th Grade
•
Practice Problem
•
Easy
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1.
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, salad, and MnMs.
2.
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 oxygen (O), gold (Au), and hydrogen (H).
3.
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 table salt (NaCl).
4.
FLASHCARD QUESTION
Front
What is the difference between a homogeneous mixture and a heterogeneous mixture?
Back
A homogeneous mixture has a uniform composition throughout, like lemonade, while a heterogeneous mixture has a non-uniform composition, like salad.
5.
FLASHCARD QUESTION
Front
What is an example of a homogeneous mixture?
Back
Lemonade is an example of a homogeneous mixture because it has a uniform composition.
6.
FLASHCARD QUESTION
Front
What is an example of a heterogeneous mixture?
Back
Sand in a bottle is an example of a heterogeneous mixture because the different components can be seen and separated.
7.
FLASHCARD QUESTION
Front
How many elements are in the compound NaHCO₃ (Baking Soda)?
Back
Baking Soda (NaHCO₃) contains three different elements: sodium (Na), hydrogen (H), carbon (C), and oxygen (O).
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