Heating Cooling Curves Form 2

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1. Please complete grid for the following Heating Curve. *

This is asking what about a particular phase (solid, liquid, gas).

III

In what part of the curve would Substance X have a definite shape and definite volume?

In what part of the curve would Substance X have a definite volume but no definite shape?

In what part of the curve would Substance X have no definite shape or volume?

In what part of the curve represents a mixed solid/liquid phase of substance X?

What part of the curve is kinetic energy increasing?

What part of the curve is potential energy increasing?

What part of the curve has the greatest increase in potential energy?

Which part of the graph is the kinetic energy being converted to potential energy?

What part of the curve has the lowest kinetic energy energy?

III

In what part of the curve would Substance X have a definite shape and definite volume?

In what part of the curve would Substance X have a definite volume but no definite shape?

In what part of the curve would Substance X have no definite shape or volume?

In what part of the curve represents a mixed solid/liquid phase of substance X?

What part of the curve is kinetic energy increasing?

What part of the curve is potential energy increasing?

What part of the curve has the greatest increase in potential energy?

Which part of the graph is the kinetic energy being converted to potential energy?

What part of the curve has the lowest kinetic energy energy?

Question 2: What is the melting temperature of substance X? *

-15 degrees Celsius

5 degrees Celsius

55 degrees Celsius

80 degrees Celsius

There are no correct answers above.

Question 3: What is the boiling temperature of substance X? *

-15 degrees Celsius

5 degrees Celsius

55 degrees Celsius

80 degrees Celsius

There are no correct answers above.

Question 4: If there is 100 Joules of heat being absorbed per minute in your heating curve, please calculate the amount of heat needed to completely melt the solid at its melting point (when it just starts to melt) and heat it till it just starts to vaporize. *

Hint: How many minutes would this take on the graph?

1400 J

200 J

1000 J

1800 J

There are no correct choices.

Question 5. What is clearly wrong with this graph? *

The graph starts at -15 degrees Celsius

The freezing point and the melting point are the same temperature

The boiling point is not at 100 degrees Celsius

The time it takes to vaporize the liquid should be longer than the the time it takes to melt

The time it takes to melt should be longer than the time it takes to vaporize

Question 6. True or False. Substance X is water. *

True

False

Question 7. What is the correct equation that describes Interval IV and is correctly described as either endothermic or endothermic?

a) H₂O (s) → H₂O (l) + Heat , Endothermic

b) H₂O (s) → H₂O (l) + Heat , Exothermic

c) H₂O (s) + Heat → H₂O (l) , Endothermic

d) H₂O (s) + Heat → H₂O (l) , Exothermic

e) H₂O (l) → H₂O (g) + Heat , Endothermic

f) H₂O (l) → H₂O (g) + Heat , Exothermic

g) H₂O (l) + Heat → H₂O (g) , Endothermic

h) H₂O (l) + Heat → H₂O (g) , Exothermic

Question 8. Given the Diagram of the Superheated Steam Demo below, choose the correct statement that correctly describes the flow of heat. *

a) The heat was released exothermically from the H₂O (g) and absorbed endothermically by the cotton.

b) The heat was absorbed exothermically from the H₂O (g) and released endothermically by the cotton.

c) The heat was released endothermically from the H₂O (g) and absorbed exothermically by the cotton.

d) The heat was absorbed endothermically from the H₂O (g) and released exothermically by the cotton.

e) None of the answers above are correct

9. Please choose all the incorrect illustrations of a compound in the solid, liquid, and phase. *

Hint: The process is a physical change!!!! There is more than one answer!!! Think of the definition of each phase!

Required

10. Who makes awesome google forms? *

Mr. G!!!!!!!!!

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