They will create a chemical formula to represent the compound, create a name for the compound, and justify why it would be classified as an organic compound. Second, students imagine they are a chemist that has discovered a new organic compound. Allow students to use their Periodic Table as a reference tool. Encourage the use of the Periodic Table.Ĭreate a chemical formula for an organic compound and justify the classification as being organic.įirst, students answer several multiple choice questions identifying organic compounds and their components. In 7th grade, students do not need to know the rules about bonding, but know models of compounds can be represented in different ways. Students read about models of compounds and then asked to identify models of organic compounds.
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Given models of compounds, differentiate the organic compounds from the inorganic compounds. Remind students to use their Periodic Table as a reference tool. The second activity has a list of compounds and students are asked to identify the organic compounds. One activity students drag and drop descriptors about organic and inorganic compounds. There are two activities to check for understanding of organic compounds.
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Students can update or add to their observation based on information in the reading. The information can be used to verify the observation they created. Encourage students to use their Periodic Table throughout the entire lesson.Įxplain how organic compounds differ from inorganic compounds.ĭuring the explain section, students will read information about organic and inorganic compounds. At this point, their observation should say something about the compound containing carbon and hydrogen.
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Once the compounds are sorted, students will be asked to make and record an observation that can be used to identify an organic compound. Students will be given a list of chemical formulas and a t-chart in which they have to sort the compounds as organic or inorganic based on examples provided. 5E CycleĮngage in prior knowledge of what organic means.Įxplore patterns in compounds that define organic compounds and make an observation about identifying organic compounds. In this lesson, students identify that organic compounds contain carbon and other elements such as hydrogen, oxygen, phosphorus, nitrogen, or sulfur (TEKS (7)(6)(A)). If you had one molecule of the organic compound vanillin, C 8H 8O 3, how many carbon atoms would each molecule contain? If you said eight, you are correct! How many atoms total are in one molecule of vanillin? If you said 19, you are correct again. There are a total of three atoms in one molecule of carbon dioxide, CO 2. One molecule of CO 2 contains one atom of carbon and two atoms of oxygen. However, water is an example of an inorganic compound because it does not contain carbon and it was not formed by a living organism.Ĭarbon dioxide, CO 2, is another example of an inorganic compound because it does not contain both carbon and hydrogen. Our bodies are composed mostly of water, H 2O, and it is necessary for us to survive. All living organisms contain carbon-based compounds, making them organic. Sugar is processed from sugar cane, a plant.
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The compound contains carbon, hydrogen, and oxygen. Why is sugar organic? The chemical formula for sugar is C 6H 12O 6. All living organisms contain carbon-even bacteria.Įarlier when you were looking at the pictures, sugar was identified as organic. When you wrote your observation, did you mention carbon is always present and that hydrogen and oxygen are commonly found in organic compounds? Great! Most organic compounds contain carbon, hydrogen, and sometimes other elements such as nitrogen, sulfur, oxygen, or phosphorus.