Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Solid is characterized by molecules with minimal movement and strong forces between them.

Answer: Which state of matter is characterized by molecules with minimal movement and strong forces between them?


Question: Landslides moving loose rocks downhill process is the best example of a sudden change to earth’s surface.

Answer: Which process is the best example of a sudden change to Earth’s surface?


Question: Substances that cannot be broken down into simpler substances with different properties are called elements.

Answer:
What are substances that cannot be broken down into simpler substances with different properties called?