5. The particle theory of matter helps explain why fluids act the way they do. The particle theory of matter states that:
(a) all matter is made up of big particles; particles have spaces between them; particles are in constant motion; particles move faster and spread apart when they are heated; particles attract one another. (b) all matter is made up of tiny particles; particles have no spaces between them; particles are never in motion; particles move faster and spread apart when they are heated; particles attract one another. (c) all matter is made up of tiny particles; particles have spaces between them; particles are in constant motion; particles move slower and come together when they are heated; particles attract one another.
(d) all matter is made up of tiny particles; particles have spaces between them; particles are in constant motion; particles move faster and spread apart when they are heated; particles attract one another.
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