# 1. How many correct experiments do we need to disprove a theory? How many do we need to prove a theory? Explain. 2. A guidebook describes the rate of climb of a mountain trail as 120 meters per kilometer. How can you express this as a number with no units?

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The-----------theory of matter states that all particles of matter are in constant motion.

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Neutrons, protons, electrons are known as subatomic particles explain why that is?