QUIZ FEBRUARY 13, 2015. QUIZ YOU ARE SEATED AND SILENT DEDUCTION OF 10 POINTS FOR TALKING DURING THE QUIZ REMAIN SILENT EVEN IF YOU ARE FINISHED WITH.

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Presentation transcript:

QUIZ FEBRUARY 13, 2015

QUIZ YOU ARE SEATED AND SILENT DEDUCTION OF 10 POINTS FOR TALKING DURING THE QUIZ REMAIN SILENT EVEN IF YOU ARE FINISHED WITH THE QUIZ

AIM PROMPT It is 20°F and ice has formed on the road. What is the most likely product that may be employed to deice the road?

Q1: What does salt do to the freezing point of water?

Q2: Why is the salt used in deicing the road, is not really effective below the temperature of 15°F?

Q3: What substance is better than salt when the weather falls below 15°F?

Q4: Why is CaCl is a better deicing agent than NaCl?

Q5: What phase change(s) are occurring when the ice is at solid-liquid equilibrium?

Q6: Why would ice remains in solid form even though some of the water molecules are melting?

Q7: What type of bond exists in NaCl?

Q8: Does NaCl interfere with melting?

AIM PROMPT It is 20°F and ice has formed on the road. What is the most likely product that may be employed to deice the road?