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12/9 & 12/ th Grade Agenda Learning Objective: Learn about Fire Safety Collect HW: Reading & Notetaking: p.119 – 122 Textbook Reading p HW: Reading & Notetaking p.124 – 125 Reminder HW: Science Fair Background due 1/14 & 1/15 (10 Points)
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Daily Reflection Prompt: Write 3 facts about fire safety.
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What is combustion? Combustion is a rapid reaction between oxygen and a substance called a fuel.
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What are the three things necessary to start and maintain a fire?
Fuel Oxygen Heat
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What are four common sources of fires at home?
Small heaters Fires in the kitchen Faulty electric wiring Carelessness with cigarettes.
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How can you fight a fire? A. Blow air on it?
B. Cover it with baking soda? C. Use a fire extinguisher? D. Pour water on it?
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Which of the following is a safety aid in a fire safe home.
A) smoke detectors B) gasoline can in the basement C) Fire extinguishers D) Box of baking soda in the kitchen
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Solution vs Suspension What is a mixture in which particles can be seen and easily separated by settling or filtration? Suspension Chalk and water when we mix substances they stay in clusters
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Solution vs Suspension What is a well mixed mixture?
Salt and water If you taste a salt solution, any sip tastes just as salty as the next.
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Solvent vs Solute The part of the solution present in the largest amount is called…
In Salt water which part is the solvent? Water
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Solvent vs Solute A substance present in a solution in a smaller amount is called…
In Salt water which part is the solvent? Salt
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Something we drink is also known as the “universal solvent”
Water Why? Because it dissolves so many substances. Water solutions are essential in the living world
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What two factors affect the solubility of a substance?
Temperature Type of solvent Most solids become more soluble as the temperature goes up Most gases becomes less soluble as the temperature goes up
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What is a solution? In a solution, particles are uniformly distributed and too small to scatter light.
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What is a colloid? A Colloid is a mixture that contains small undissolved particles that do not settle out.
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What is a Suspension? A suspension is a mixture in which particles can be seen and easily separated by settling or filtration.
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