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Can the phase of matter be changed?
by increasing the temperature until it melts or boils, or by decreasing the temperature until it liquifies or freezes
What will happen to temperature if ice is heated until it melts then boils?
When you heat ice it takes in the heat and its temperature rises until it reaches melting point. It then takes in heat without getting hotter. When it's all melted, then the water that it now is gets hotter and hotter. When it reaches boiling point more heat will simply turn it into steam without it getting hotter. If you keep adding heat to the steam then it will get hotter. The heat that you have to add to something to change its physical state (i.e. from solid to liquid or liquid to gas) but without it actually getting hotter, is known as 'latent heat'.
The phase of matter can be changed by?
changing the temperature or surrounding pressure of a substance
What happens to an ice cube when heated?
When an ice cube is heated, it absorbs heat energy and begins to melt, turning into liquid water. Continued heating will cause the water to further increase in temperature until it eventually turns into steam as it boils.
What will happen to temperature if ice is heated until it melts then boils Its temperature will rise continuously until it completely melts Its temperature will rise until reaching 0 C Its temperature?
Its temperature will rise to 0 deg C. It will remain around there until all the ice is melted and then it will rise to 100 deg C. Again, the temperature will remain nearly static until all the liquid has turned to vapour. Then the temperature will rise again.The temperature may continue to increase very slowly at 0 and 100 degrees because the melting and boiling will not take place uniformly across the mass. For example, the ice around the temperature probe might all be melted (so the temp should start rising) but there might still be more ice floating around (so the temp should not rise).
What are true about a block of ice at -10C as you continue to apply heat. Its temperature will rise continuously until it completely melts. Its temperature will rise until reaching 0?
Its temperature will rise until reaching 0°C, at which point it will remain constant as it undergoes a phase change from solid to liquid until it completely melts. Once the ice has melted, further heat input will cause the temperature of the resulting water to increase.
What evidence might you have that a change of state requires the use of heat of energy that would otherwise cause the temperature to increase?
You can heat ice, for example, and measure the temperature while it melts. You should notice that you heat it for quite a while, but that the temperature doesn't increase until all the ice is melted.
Does the temperature of a boiling liquid increase as it boils?
No. Take water for example. Water boils at 100 degrees C. When water boils it becomes steam. This steam as soon as it is released is 100 degrees C also. The boiling point for a liquid is the point when it becomes a gas.
When ice is heated it melts is this a theory or law?
This is a law, known as the law of conservation of energy. Heat energy is transferred to the ice, causing its temperature to increase until it reaches its melting point, at which point it melts into liquid water.
When a kettle boils what are the energy transfers?
When a kettle boils, energy is transferred from the electric heating element to the water in the form of heat. The heat energy causes the water to increase in temperature until it reaches its boiling point, at which point some of the heat energy is also used to convert the water into steam.
If you started with water -10 degrees celsius describe what a thermometer would show if you heat it until it is over 110 degrees celsius?
The thermometer would show a gradual increase in temperature from -10 degrees Celsius as the water is heated. Once it reaches 0 degrees Celsius, the temperature will plateau until all the ice melts. Then, the thermometer will continue to rise above 0 degrees Celsius until it reaches over 110 degrees Celsius as the water boils.
Does the water temperature change as it boils?
If you heat water its temperature will increase until it reaches 100 degrees C, at which point it starts to boil. Boiling means it is all changing into a gas. Whilst it is boiling, the temperature remains constant, because the energy is being used to separate the particles instead of making them move faster. Not until the liquid has become gas does the temperature rise again.
