Question 3 of 10
Which of the following is the best definition of a chemical change?
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O A. A change in a substance where one or more new substances form
O B. A change in a substance where no new substance forms
O C. A change in a substance where energy is conserved
О
D. A change in a substance where a phase change occurs
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Ответ:
A change in a substance where one or more new substances form
Explanation:
Ответ:
No, you need both mass and volume to determine its desity to see if it can float.
Explanation:
If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume. If two objects take up the same volume, but have one has more mass, then it also has a higher density.