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ravel-sized fragments, respectively. Chemical Sedimentary Rocks Formed through mineral precipitation from solution. Examples include: Limestone: Mainly composed of calcite; reacts with acid. Chert: Microc

liances. Properties of Matter Density: Mass per unit volume and its significance. States of Matter: Solids, liquids, gases—properties and behavior. Pressure and Atmosphere: How pressure interacts with gases and liquids. Application: Understanding why objects float or sink in