Which state of matter has a definite shape and definite volume?, Gas, Solid, Liquid, Plasma, Which state of matter takes the shape of its container but has a fixed volume?, Solid, Liquid, Gas, None, Which state of matter has no fixed shape or volume?, Solid, Liquid, Gas, Ice, In which state are particles closest together?, Solid, Liquid, Gas, Plasma, Which state has particles that move the fastest?, Solid, Liquid, Gas, Ice, What is the main force that causes gas particles to move continuously?, Gravity, Magnetism, Kinetic energy, Electricity, Which statement about gas particles is correct?, They are tightly packed., They move freely in all directions., They cannot move., They stay in one place., Which property best describes gases?, Fixed shape, Fill the entire container, Fixed volume, Cannot be compressed, According to the collision theory, a chemical reaction occurs only when:, Particles move slowly., Particles collide with enough energy and the correct orientation., Particles are far apart., The pressure decreases., Which change increases the number of collisions between gas particles?, Decreasing the pressure., Lowering the temperature., Increasing the pressure., Decreasing the number of particles.

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