what is the effect of heating or cooling substances explain with two examples
Answers
Answer:
Heating and Cooling Matter
Introduction
Heat is a form of energy. We perceive cold as the lack of heat. We heat and cool things every day. Materials will interact with heat and sometimes can change state.
Materials and objects can get warmer when heated.
A pot of water gets hotter as you heat it on the stove.
An object put on a hot radiator gets hotter.
Dark objects placed in bright sunlight can absorb the sunlight and heat up.
Materials and objects can get colder when heat is removed.
Objects placed in the refrigerator or freezer will lose heat and get colder.
Materials placed outdoors in the wintertime when it is cold will lose heat and get colder.
Placing an object in cold water will cause the object to lose heat.
Materials can change state as a result of heating or cooling.
Examples of state changes caused by heating.
When ice is heated it melts and becomes liquid water.
When liquid water is heated until it boils it turns into a gas.
Water and perfume when they are heated will evaporate producing gas (called vapor) which dissolves in air.
Examples of state changes caused by cooling.
When liquid water is cooled to the freezing point it will form ice.
Water vapor dissolved in the air will condense when it is cold forming snow or frost which are solids.
Water vapor dissolved in the air will condense on a cold glass of lemonade to form droplets of liquid water.