Pure Substances, Mixtures and Solutions

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Presentation transcript:

Pure Substances, Mixtures and Solutions

Bellringer Insert Bellringer here

Today’s Agenda 1. Bellringer 2. Review : Elements & Compounds 3. Todays’ Objective & Journal Entries 4. Brain-Pop Video 5. Notes 6. Classify This 7. Venn Diagram 8. Exit Slip – Check for mastery

Mixtures Solutions Elements- review Compounds - review Classes of Matter Mixtures Solutions Elements- review Compounds - review

Review- Elements 1. Element composed of identical atoms and it is in its purest form. EX: copper, aluminum, oxygen

Review- Compounds 2. Compounds are made up of 2 or more different elements. (cells are classified as compounds too) Example: water, carbon dioxide, nitrogen oxide , cells

Today’s Objective Benchmark:SC.8.P.8.9 Students will: Analyze the properties of substances to determine if they are mixtures or pure substances.

Journal Entries Unit 2 – Lesson 4 Date Entry Page Number Unit 2-Day 4 - Pure Substances, Mixtures, and Solutions Mixtures / Solutions Notes - RIGHT SIDE Classify This T-Chart - LEFT SIDE Exit Slip Questions - RIGHT SIDE Venn Diagram & Exit Slip Answers - LEFT SIDE

Brian Pop Compounds and Mixtures http://www.brainpop.com/science/matterandchemistry/compoundsandmixtures/ Brain teaser question: What is the difference between a compound and a mixture? Username & Password: palmbeach

Classes of Matter Mixtures Solutions Elements Compounds

MIXTURES

Vocabulary Mixture Heterogeneous Homogeneous 4. Solution 5. Solvent 6. Solute Suggestion: Word Wall Activity or another Vocab activity

Mixtures 3. Matter that consists of ________________ ________________ two or more substances mixed together but not chemically combined. Right side notes

Mixtures physical means 4. Can be separated by _______ ______. Ex: Cereal, Sand, Soil, Concrete, Salad Dressing physical means Right Side Notes

Properties of Mixtures 5. Substances in a mixture keep most of their own properties. ___________ Right Side Notes Sugar-water

Classify these examples as a compound or a mixture: 6. In a mixture: Substances do not change in chemical composition (no new substance is formed) Classify these examples as a compound or a mixture: 1. Air in the atmosphere: Mixture: Oxygen, Nitrogen, Carbon Dioxide, etc.

Classify these examples as a compound or a mixture: 2. Water Compound: H2O

Classify these examples as a compound or a mixture: 3. Glass Mixture: Sand super heated

Heterogeneous Mixture 7. A mixture that ____________________________________ does not appear to be the same throughout. Sand and Water Cereal Oil and Water Right Side Notes

Sugar Water (Kool-Aid) Homogeneous Mixture 8. A mixture that appears to be the same throughout. Remains constantly and uniformly mixed. Salt Water Sugar Water (Kool-Aid) Right Side Notes

Solutions best mixed “9. _________” of all mixtures Not easily separated by physical means Koolaid, Lemonade, Salt Water

11. Solvent – the substance that does the dissolving Solutions 10. Solute – the substance that is dissolved 11. Solvent – the substance that does the dissolving Right Side Notes

If I mix sugar into water.. What is the Solute? What is the Solvent? Check for understanding: Solute: Sugar, Solvent: Water

Pure Substance 12. A pure substance is a chemically combined material that has consistent properties throughout the sample. Examples (Elements & Compounds): tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Right Side Notes

Left Side : Classify This In your journal you will create a T chart to classify each object as either an element, compound, or mixture Pure Substances Mixtures Elements Compounds Heterogeneous Homogenous

1. Oxygen 2. Nitrogen Dioxide 3. Koolaid 5. Blood Cells 4. Salt Water 6. Lemonade 8. Cereal 7. N2

Elements Pure Substances Mixtures 2. Nitrogen Dioxide 8. Cereal Compounds Heterogeneous Homogenous 2. Nitrogen Dioxide 8. Cereal 1. Oxygen 3. Koolaid 6. Lemonade 4. Salt Water 7. N2 5. Blood Cells

Left Side : Venn Diagram and Exit Slip Answers Have students use Smart-Board or Promethean Board to write answers on the Venn Diagram.

Right Side : Exit Slip Questions Fill in FCAT style exit slip

Left Side : Exit Slip Answers Post Exit – Slip answers and have students check themselves for mastery.

Left Side Extension: List five examples of mixtures you observed today. List five examples of pure substances you observed today. List five examples of solutions you observed today.