| Grade 7 |
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Standard 4.0 Chemistry: Students will use scientific skills and processes to explain the composition, structure, and interactions of matter in order to support the predictability of structure and energy transformations.
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A. Structure of Matter
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1. Cite evidence to support the fact that all matter is made up of atoms, which are far too small to see directly through a microscope.
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a. Recognize and describe that the atoms of each element are alike but different from atoms of other elements.
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b. Recognize and describe that different arrangements of atoms into groups compose all substances.
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c. Provide evidence from the periodic table, investigations and research to demonstrate that elements in the following groups have similar properties.
- Highly reactive metals, such as magnesium and sodium
- Less-reactive metals, such as gold and silver
- Highly reactive non-metals, such as chlorine, flourine, and oxygen
- Almost non-reactive gases, such as helium and neon
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d. Provide examples to illustrate that elements are substances that do not breakdown into smaller parts during normal investigations involving heating, exposure to electric current or reactions with acids.
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e. Cite evidence to explain that all living and non-living things can be broken down into elements.
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B. Conservation of Matter
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C. States of Matter
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D. Physical and Chemical Changes
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