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You Light up my Life!

You Light up my Life!. Lab Activity. ChemCatalyst. If you were to drop a spoonful of salt, NaCl, into a glass of water, what would happen? If you were to drop a gold ring into a glass of water, what would happen?

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You Light up my Life!

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  1. You Light up my Life! Lab Activity

  2. ChemCatalyst If you were to drop a spoonful of salt, NaCl, into a glass of water, what would happen? If you were to drop a gold ring into a glass of water, what would happen? What do you think is different about the atoms of these two substances? Why wouldn’t the individual gold atoms come apart?

  3. The Big Question What patterns do we see in the properties of substances?

  4. At the end of this lab… You will be able to: Predict whether MgSO4(aq), epsom salts, will conduct electricity.

  5. Lab Set-up

  6. Activity Purpose: This lesson allows you to collect evidence regarding some of the properties of substances, and look for patterns.

  7. No N/A Yes No No Yes Yes Yes No No No No No Yes Yes No Yes Yes Yes Yes

  8. (cont.)

  9. 1. Substances that don’t Dissolve in water, BUT conduct electricity • Copper • Aluminum foil

  10. Salt-NaCl Calcium-ChlorideCaCl2 Copper Sulfate-CuSO4 They are all IONIC BONDS Sugar-C12H22O11 Ethanol-C2H6O Water-H2O They are all COVALENT BONDS!

  11. Wrap up Dissolves Yes No Conducts Conducts Yes No Yes No

  12. 3. What do the substances that conduct electricity once dissolved have in common? They are all made up of ionic bonds. Ionic bonds are made up of a metal and a non-metal. Metals a good conductors of heat and electricity.

  13. 4. What do the substances that Don’t conduct electricity once dissolved have in common? They are all made up of covalent bonds. Covalent bonds are made up of all non-metals. Non-Metals a NOT good conductors of heat and electricity.

  14. 5. & 6. Write a generalizing statement about the substances that DO and Don’t light up the bulb. Hint: • Think about bonds • What the bonds are made up of • Any properties

  15. 7. Predict whether isopropanol, C3H8O (l), will conduct electricity. No because it is all made up of covalent bonds and covalent bonds are made up of all non-metals. Non-Metals a NOT good conductors of heat and electricity.

  16. Making Sense If it is dangerous to take a bath with a blow dryer, what must also be true about the water in the bathtub?

  17. Check-In Predict whether MgSO4(aq), epsom salts, will conduct electricity. State your reasoning.

  18. Question? The element K is located between Na and Rb. Based on where it is located on the periodic table, what are some properties that we can predict about K?

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