1/4 Try It: Chemical Properties and Changes The following statements all describe changes in matter. Some of these changes are physical, and some are che examples of chemical changes. O Baking cookies O The Statue of Liberty's metal tarnishes from copper to green O Cold butter melts into liquid butter when heated O Salt is dissolved into freshwater O Food scraps decompose into fertilizer in a compost pile O Frying changes the color and texture of an egg O Ocean water evaporates to water vapor on a hot day O Lighting a match
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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