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5-8 Chem D1

5-8 Chem D1. Opener 5-8. Copy down the sentence that convinces you the MOST about its conclusions. Unknown C is ionic because it is solid.

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5-8 Chem D1

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  1. 5-8 Chem D1

  2. Opener 5-8 Copy down the sentence that convinces you the MOST about its conclusions. • Unknown C is ionic because it is solid. • Unknown C is ionic because it did not melt after 15 seconds. Salt, which is also ionic, did not melt after 15 seconds and has a high melting point. However, since sugar is covalent and took 5 seconds to melt, I concluded C had a high melting point and is ionic. • Unknown C is ionic because it took a long time to melt.

  3. Copy down the sentence that convinces you the MOST about its conclusions. • Unknown A is polar covalent because the conductivity was low. • Unknown A is polar covalent because it dissolved. • Unknown A is polar covalent because it dissolved in water. When we did the t-charts we noticed that MOST polar covalent substances dissolved in water, so I think Unknown A is polar too.

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