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When your sweat evaporates is that a chemical change?
Evaporation is a physical phenomenon.
Why do you feel cool on applying perfume or aftershave lotion?
evaporation takes energy. It gets this energy from the surface its evaporating from in the form of heat. The faster the evaporation, the greater the cooling effect. This is why we sweat, it evaporates to cool us down. perfume is mainly alcohol. This evaporates quickly hence the effect you have noticed.
What wastes are released by sweating?
Sweating (also called perspiration or sometimes transpiration) is the loss of a watery fluid, consisting mainly of sodium chloride (commonly known as salt) and urea in solution, that is secreted by the sweat glands in the skin of mammals. Sweat also consist of the chemicals or odorants 2-methylphenol and 4-methylphenol. In humans, sweating is primarily a means of temperature regulation. Evaporation of sweat from the skin surface has a cooling effect due to the latent heat of evaporation of water. Hence, in hot weather, or when the individual's muscles heat up due to exertion, more sweat is produced. Sweating is increased by nervousness and nausea and decreased by cold. Animals with few sweat glands, such as dogs, accomplish similar temperature regulation results by panting, which evaporates water from the moist lining of the oral cavity and pharynx.
Why is sweat evaporating a physical change?
It is a physical change : P Physical changes are mainly when: -Something
What is the the opposite of condensation?
Evaporation is the opposite of condensation.
When humans sweat water release heat through?
Evaporation cooling
Why a person sweat?
Fear. exertion. Sweat is used to cool the body by evaporation.
How do sweat glands contribute to temperature regulation in mammals?
Some mammals do not sweat. For mammals that do sweat, evaporation of the sweat is how cooling works.
Why does not camel sweat?
Camels do sweat, the evaporation takes place at skin level and not on their coat
Does evaporation require heating?
No. But it does require a transfer of heat energy. So the evaporation of sweat cools you.
What your sweat does when it leaves your skin?
Cools the skin by evaporation
What does the human body depend on to cool itself?
sweat and evaporation
How does the skin fuction to keep you cool?
You can sweat. Evaporation cools.
What change of state does sweat involve?
liquid to gas
When your sweat evaporates is that a chemical change?
Evaporation is a physical phenomenon.
What does the body depend upon when cooling itself in a hot environment?
The latent heat of evaporation of water - the evaporation of sweat.
What else can you sweat for?
Sweating, also known as perspiration, is the production of fluids secreted by the sweat glands in the skin of mammals. Evaporation of sweat from the skin surface has a cooling effect due to the evaporation of water. Sweating is done to cool down the body's temperature.
