What happens to the speed of molecules in a solid substance when it is heated?
science

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Science
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7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The speed of its molecules increases.
2.
FLASHCARD QUESTION
Front
What is a molecule that consists of different atoms called?
Back
A compound molecule.
3.
FLASHCARD QUESTION
Front
What is the composition of a water molecule?
Back
One oxygen atom and two hydrogen atoms.
4.
FLASHCARD QUESTION
Front
If you add 30 cm³ of water to 20 cm³ of alcohol, what is the total volume of the mixture?
Back
48.8 cm³.
5.
FLASHCARD QUESTION
Front
Are the distances between molecules in solid substances very small?
Back
True.
6.
FLASHCARD QUESTION
Front
What is the definition of a solid?
Back
A state of matter with a definite shape and volume.
7.
FLASHCARD QUESTION
Front
What is the primary characteristic of liquids?
Back
They have a definite volume but take the shape of their container.
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