Science help!!!? HEAT?

Question

Suppose you place a saucepan full of ice on the stove. If you were able to read the temperature of the pan's contents, explain what you would observe as the ice is heated?

Does heating always cause an increase in temperature? Explain

Answer 1

The temperature remains the same until all the ice has melted.

The heat input goes into the endothermic melting of the ice.

Answer 2

The model of the time vs. temperature as time goes on temperature increases then a plateau forms in the model.

As temperature increases the ice will start to melt and when the ice begins melting the temperature of the ice remains the same.  That is the plateau in the model, then once all the ice is water the temperature will increase again until it begins to boil. Then another plateau will form in the model.

Answer 3

The first answer is wrong, the next two are correct.  Once the ice begins to melt, the temperature of the ice and water remain the same until all the ice is melted (0c, 32f).  Applying more heat will make the ice melt faster, but not raise the temp.  Once the ice is melted the temperature of the water will continue to rise until it boils.  Then the temperature of the water will remain at the boiling point until all the water is boiled away.

Answer 4

the pan will gradually become hotter, and a hot pan will melt ice.

Heating always cause an increase in temperature because heat itself is energy causing the molecules in an object to move. and since it moves, it has the ability to bump into other particles, causing a transfer of heat. and since it's the case of the stove, there is a constant source of heat, the heat is transferred to the pan by the fire, and metal is a good conductor of electricity and heat, so it will eventually spread throughout the pan, and thus increasing temperature.