Tiered Activity: Elements, Compounds, and Mixtures Goals/Standards: S8P1b. Describe the difference between pure substances (elements and compounds) and mixtures Pre-assessment/Formative Assessment: At the end of the Elements, Compounds, and Mixtures lesson, students will complete a summarizing strategy. Based on the summarizing strategy, the teacher will place the students into two groups: students who primarily understood the concepts and students who did not understand the concepts. Introduction: Based on the summarizing strategy, students will either receive Level 1 or Level 2 Category Cards. Students can work in small groups or individually to sort the cards into the following categories: Element, Compound, Mixture, or in some cases a combination of these. Level 1: Images are less complex and examples are common substances that will be easier for students to categorize and explain Level 2: Images are more complex and examples require higher order thinking to categorize and explain Closure/Assessment: The teacher will observe students or groups will completing the activity. The teacher should spend more time with Level 1 students initially to make sure they understand the concepts. Students will record their responses while completing the activity on the handout provided by the teacher. Additionally, the teacher will check the handouts to determine student understanding Adapted from Jessica Hockett, 2009
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 1 Cards 1. 2. 3. 4. 5. 6. 7. 8. 9. Tea 10. Water H 2 0 11. Oxygen (O) 12. Soft Drink
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 1 Cards 13. Nitrogen (N) 14. Laundry Detergent 15. Salt (NaCl) 16. Milk 17. Oil & Vinegar Salad Dressing 19. Carbon (C) 21. Air 23. Aluminum (Al) 18. Methane (CH 4 ) 20. Chicken Noodle Soup 22. Carbon Dioxide (CO 2 ) 24. Beach Sand
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 1 Cards 25. Alcohol (C 2 H 6 O) 27. Raisin Bran Cereal 26. Calcium (Ca) 28. Steel
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 2 Cards 1. 2. 3. 4. 5. 6. 7. 8. Glucose (C 6 H 12 O 6 ) 9. Ink 11. Gallium (Ga) 10. Propane (C 3 H 8 ) 12. Plasma (in blood)
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 2 Cards 13. Platinum (Pt) 15. Citric Acid (C 6 H 8 O 7 ) 17. Bronze 19. Rhodium (Rh) 21. Glass 23. Plutonium (Pu) 14. Smoke 16. Pond Water 18. Sucrose (C 12 H 22 O 7 ) 20. Jello Gelatin 22. Baking Soda (NaHCO 3 ) 24. Soil
Tiered Activity: Elements, Compounds, and Mixtures LEVEL 2 Cards 25. Gas (fuel) 26. Cesium (Cs) 27. Concrete 28. Brass
Elements, Compounds, and Mixtures Name Date Period Directions: Use the numbered cards provided by the teacher to identify elements, compounds, and mixtures. Use the spaces below to record your answers and your explanations for each. If the numbered card is a Compound, include the number of atoms and elements in each compound. Identify below all of the numbered cards that are Elements: Why are these examples of elements? Identify below all of the numbered cards that are Compounds: Why are these examples of compounds? Write out the Compounds below and identify the number of elements and the number of atoms in each compound. Identify below all of the numbered cards that are Mixtures: Why are these examples of mixtures: Identify two additional examples of an element. Identify an additional compound. (use another resource if needed) Identify an additional example of a mixture.
Tiered Activity: Elements, Compounds, and Mixtures KEY Level 1 Cards Identify below all of the numbered cards that are Elements: 2, 3, 4 and 8 (both contain elements but are mixtures of two different elements), 11, 13, 19, 23, 26 Why are these examples of elements? Made up of one type of atom; Cannot be broken down by physical and chemical methods Identify below all of the numbered cards that are Compounds: 1, 6, 7, 10, 15, 18, 22, 25 Why are these examples of compounds? Form when two or more different elements join (bond) together chemically Write out the Compounds below and identify the number of elements and the number of atoms in each compound. 1 two elements, 3 atoms 18 two elements, 5 atoms 6 two elements, 6 atoms 22 two elements, 3 atoms 7 two elements, 6 atoms 25 three elements, 9 atoms 10 two elements, 3 atoms 15 two elements, 2 atoms Identify below all of the numbered cards that are Mixtures: 4, 5, 8, 9, 12, 14, 16, 17, 20, 21, 24, 27, 28 Why are these examples of mixtures: Form when elements and/or compounds are combined physically; Properties of a mixture are related to its components; Composition varies from sample to sample; Can be separated by physical methods
Tiered Activity: Elements, Compounds, and Mixtures KEY Level 2 Identify below all of the numbered cards that are Elements: 11, 13, 19, 23, 26 Why are these examples of elements? Made up of one type of atom; Cannot be broken down by physical and chemical methods Identify below all of the numbered cards that are Compounds: 1-7 (have compounds in them, but are really mixtures of compounds) 8, 10, 15, 18, 22, Why are these examples of compounds? Form when two or more different elements join (bond) together chemically Write out the Compounds below and identify the number of elements and the number of atoms in each compound. 8 three elements, 24 atoms 22 4 elements, 6 atoms 10 two elements, 11 atoms 15 three elements, 21 atoms 18 three elements, 41 atoms Identify below all of the numbered cards that are Mixtures: 1, 2, 3, 4, 5, 6, 7 (all are mixtures of elements and/or compounds) 9, 12, 14, 16, 17, 20, 21, 24, 25, 27, 28 Why are these examples of mixtures: Form when elements and/or compounds are combined physically; Properties of a mixture are related to its components; Composition varies from sample to sample; Can be separated by physical methods