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Unit 1 Matter

Density Column Physical and Chemical Properties and Changes. Unit 1 Matter. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: What are the appropriate units to measure or calculate the mass and volume of substances?. Bell Work 09/11/2012

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Unit 1 Matter

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  1. Density Column Physical and Chemical Properties and Changes Unit 1 Matter

  2. UEQ: How does the structure of matter influence its physical and chemical behavior?LEQ: What are the appropriate units to measure or calculate the mass and volume of substances? • Bell Work 09/11/2012 • First, write LEQ above. • Write Questions and Answer • What are the appropriate units for mass, volume, and density? • How do you calculate density? • Mass = kg, g • Volume = cm³, m³ • Density = g/cm³, g/L, g/mL, kg/L, kg/m³ • D = M/V

  3. UEQ: How does the structure of matter influence its physical and chemical behavior?LEQ: How can I calculate the density of substances or objects? • Use water displacement to obtain Volume -or- calculate mathematically • Remember that 1 cm³ = 1 mL • To calculate volume of cylinder: • Use triple balance beam/electronic balance to measure the mass of object

  4. UEQ: How does the structure of matter influence its physical and chemical behavior?LEQ: How do you construct and interpret a density column? • Bell Work 09-17-2012 • Write Question and Answer • What do you think a density column is?

  5. UEQ: How does the structure of matter influence its physical and chemical behavior?LEQ: How do you construct and interpret a density column? • Write the following information and calculate the density: • Water • volume: 1.5 mL mass: 1.5g • Vegetable oil • volume: 1.5 mL mass: 1.38 g • Dish soap • volume: 1.5 mL mass: 1.59 g • Rubbing alcohol • volume: 1.5 mL mass: 1.22 g • Lamp oil • volume: 1.5 mL mass: 1.20 g

  6. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • Bell Work 09-18-2012 • Write Question and Answer • Observe the magnesium strip. • What are some physical properties of magnesium? What are some chemical properties? • Propose a way you could physically change the magnesium stripand one way you could chemically change the magnesium strip.

  7. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • What is a property? • A unique characteristic that categorizes (groups or identifies) objects/substances together

  8. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? Physical properties Chemical properties Ability to change from one substance to a new substance Ability to produce a gas, burn, rust Example: Copper w/ moist air • Characteristic observed or measured without changing substance • Melting point, boiling point, color, size, ductility, malleable, density, ability to conduct heat or electricity

  9. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? Physical changes Chemical changes Substance changes into new substance b/c chemical bonds have been broken or made Occurs on molecular level Noticed by temperature change, smell/odor, bubbles (gas), rust formation Reactants products • does not change the identity or chemical makeup of the substance • Cutting, melting, drawing into wire, crushing, temperature and pressure changes

  10. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • PREDICT: • Write down a prediction of what you think will occur upon mixing lead nitrate and potassium iodide.

  11. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • Extra Credit: (3 points to test grade) • Search the internet for important uses of Potassium Iodide. Write down any important uses and turn in tomorrow. • Also, while you are searching the internet, see if you can find why Potassium Iodide should be stored in a closed amber colored bottle.

  12. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • Propose a way you could physically change each of the following. Write down your answer. • Propose a way you could chemically change each of the following. Write down your answer. • Discuss with your group.

  13. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting?

  14. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • Law of Conservation of Mass • Mass cannot be created or destroyed in ordinary chemical and physical changes • Therefore, the mass before the reaction will be equal to the mass after the reaction

  15. UEQ: How does the structure of matter influence its physical and chemical behavior? LEQ: How can physical and chemical changes be investigated in the lab setting? • Homework Assignment: • Pg. 465 #’s 1-5 • Pg. 470-471 #’s 4, 8, 10, 13-16 • Pg. 472 #’s 4, 6, 7

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