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Canyon
Grade 4
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Types of Changes

Some types of matter, such as water, exist in more than one . Heat energy causes matter to change from a solid to liquid, to a . This energy will make the particles of matter faster or slower. The particles of a solid are . Liquid particles form that move past one another. The groups of particles are completely broken. If enough energy is added, a solid may and form a liquid. Liquids can become gases if enough energy is added.