Which state of matter is a substance with definite mass but no definite shape?
A) Solids
B) Liquids
C) Gases
D) Plasma
Answer: C
Explanation: A) Incorrect. Solids are a substance with a definite volume and a fixed shape.
B) Incorrect. Liquids are substances with a definite volume but no fixed shape.
C) Correct. Gases are substances with definite mass but no definite shape.
D) Incorrect. Plasma is a gas that contains positive and negative ions.
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