Goal |
I can conduct an investigation to determine whether the
mixing of two or more substances results in new substances. |
Every substance in the world is made up of atoms. Atoms are tiny bits of matter that combine to create everything from the blood inside our bodies to the lead in our pencils. Every substance also has aunique set of properties that we can use to describe it. There are two kinds of properties, physical and chemical. A physical property is something you can observe or measure. The color of your shirt, for example, is a physical property of that shirt. Shape, hardness, and freezing, boiling, and melting points are other examples of physical properties. Whether a substance is a liquid, solid, or gas is another example of a physical property.
Chemical properties are how a substance acts under certain conditions. Wood’s ability to burn, called flammability, is an example of a chemical property. Wood undergoes a chemical change as it burns. Once it becomes ash, it cannot go back to its original state.
Chemical properties are how a substance acts under certain conditions. Wood’s ability to burn, called flammability, is an example of a chemical property. Wood undergoes a chemical change as it burns. Once it becomes ash, it cannot go back to its original state.
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Power Knowledge U.N. carolines Pass. library Trueflix U.N. carolineicsd Pass. flix |
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