This tutorial introduces states of matter. Either or neither nor worksheets pdf sections include elements, the periodic table, reactions, and biochemistry. The site has sections on atoms, matter, elements, the periodic table, biochemistry, and chemical reactions.
1997-2018 by Andrew Rader Studios, All rights reserved. Corner icon for tutorials on matter. Solids are often hard, liquids fill containers, and gases surround us in the air. How does matter change from one state to another? When the temperature of the water goes up, the molecules get more excited and bounce around a lot more.
The extra energy allows the molecules to change states. Have you ever noticed that you can smell a turkey dinner after it starts to heat up? As the energy of the molecules inside the turkey heat up, they escape as a gas. The key word to notice is “physical”.
Matter only moves from one phase to another by physical means. Adding energy can create a phase change in matter. If you place a glass of liquid water on a table, it will just sit there. When molecules move from one phase to another they are still the same substance. If you put that liquid drop in the freezer, it would become a solid piece of ice. No matter what physical state it was in, it was always water. Even though the physical state changed, the chemical properties were the same.
Neither new compound is anything like the original water molecule. Generally, changes in the physical state do not lead to any chemical change in compounds. Cartoon image of ocean wave. Oceans, lakes, and rivers are good examples of liquid water. There are many liquids around you. Planetary scientists are looking for other planets that have liquid water, but planets require very specific conditions to have water as we know it. Cartoon image of ceramic bowl.
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