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What’s in the Bubbles?

What’s in the Bubbles?. Anna is boiling water in a double neck flask. She notices that bubbles forming on the bottom of the flask rise to the top and wonders what is inside the bubbles. She asks some of her classmates what they think, and this is what they say:

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What’s in the Bubbles?

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  1. What’s in the Bubbles? Anna is boiling water in a double neck flask. She notices that bubbles forming on the bottom of the flask rise to the top and wonders what is inside the bubbles. She asks some of her classmates what they think, and this is what they say: Carlos: “They are bubbles of heat.” Sabrina: “The bubbles are filled with air.” Jorge: “The bubbles are and invisible form of water.” Alexis: “The bubbles are empty- there is nothing inside of them.” Jackie: “The bubbles contain oxygen and hydrogen that separated from the water.” Which person do you most agree with? WHY? Explain your thinking:

  2. Unit 2 LECTURE 1: MATTER MATTER • What the universe is made of. • Has mass and takes up space. • Has the property of inertia (the ability to resist changes in motion).

  3. States of matter- Depend on two factors: • kinetic energy- movement of particles (temperature) • intermolecular forces- forces between the molecules

  4. Fill in the following notes on your foldable… Outside…. States of Matter Foldable - solid, liquid, gas, plasma Strength of Intermolecular forces decreases Kinetic energy increases

  5. Solids: • Definite shape and volume • Tightly packed/ordered so can’t easily slide past each other • Incompressible (can’t be pushed together) Inside of solids….

  6. Liquids: • Indefinite shape (fluid), definite volume • Close together but can slide past each other • almost incompressible Inside of liquids….

  7. Gases: • Indefinite shape and volume • FAR apart from each other • Highly compressible • Highly disordered (entropy) Inside of gases….

  8. Plasma: • Group of high energy charged particles (electrons/ions) • Carry electrical current • Ex. Tazer guns, lightning, fire, fluorescent lights Inside of plasma….

  9. Fill in the following on your notes… Physical property • can be observed without breaking bonds in the sample • Ex. Density, color, odor, melting point, boiling point • Can be… • Extensive- depend on amount • Intensive- independent of amount

  10. Physical change • Sample changes without breaking bonds! • Ex. boil water H2O (l)  H2O (g)

  11. Chemical property • Observed through reactions (break bonds) • Ex. Iron to form rust

  12. Chemical change • Bonds break and form new substance • Ex. Hydrolysis: 2H2O (g)  2H2 (g) + O2 (g)

  13. Fill in the following notes on your concept map…

  14. matter Mixture Pure substance Physical changes

  15. Pure substance Compound- chemical combination of two or more elements Element- Pure substance that cannot be broken down Chemical change Ex. burning ex. Hydrogen gas (H2) Ex. Water (H2O)

  16. Mixture – Physical combination of two or more substance Heterogeneous mixture Physical combination Of 2 or more substances that is different throughout. Homogenous mixture Physical combination Of 2 or more substances that is the same throughout. ex. Salad dressing Ex. koolaid

  17. Siberia youtube video:https://www.youtube.com/watch?v=jKMNSvpB9dY • What happens at the macroscopic level (what you can see)? • Whatis going on at the molecular level (what we cannot see but can imagine)? • Is this a physical or chemical change? WHY?

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