If a gas is cooled, its particles will eventually stop moving about so fast and form a liquid. This is called condensation and occurs at the same temperature as boiling. Evaporation is dependent on individual particles gaining enough energy to escape the surface of the liquid and become gas particles.

When air expands, volume occupied by the air/gas increases, the number of molecules or atoms per unit volume decreases, thus the frequency of atomic collisions decrease(no. of times the atoms collide, thus decreasing the pressure).

When a gas expands, it has do pressure-volume work against the piston, atmosphere etc. to make its room to occupy. Now, as the system spends energy to work, part of its kinetic energy decreases. Since, temperature is directly proportional to kinetic energy, the system’s temperature decreases.

All three states of matter (solid, liquid and gas) expand when heated. Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.

The internal energy of the system decreases as the gas expands. The work can be calculated in two ways because the Internal energy (U) does not depend on path. The graph shows that less work is done in an adiabatic reversible process than an Isothermal reversible process.

If a gas cools, the molecules within it have less kinetic energy (motions) and can therefore be packed into a smaller volume. The gas has a higher density and will tend to sink. 5. This example shows that temperature and volume of a gas are directly related — in fact they are proportional if pressure is held constant.

When your body temperature drops, your heart, nervous system and other organs can’t work normally. Left untreated, hypothermia can lead to complete failure of your heart and respiratory system and eventually to death. Hypothermia is often caused by exposure to cold weather or immersion in cold water.

Use warm, dry compress (only on the neck, chest wall, or groin and not on the arms or legs) Do not apply direct heat (no hot water or placing a hot-water bag on the person’s body) Provide cardiopulmonary resuscitation (CPR) when necessary (when breathing and pulse is undetectable)

Low body temperature and illness. Certain illnesses, or incorrect temperature readings, could factor into why your thermometer reads 96°F (35.55°C), but you feel sick. Low body temperature could also be a symptom of a serious illness like hypothermia or sepsis, but you’d likely have severe symptoms.

In severe hypothermia, core body temperatures drop to 86 degree or lower. Normally, the activity of the heart and liver produce most body heat. But as core body temperature cools, these organs produce less heat. Low body temperature can slow brain activity, breathing, and heart rate.

If you have a body temperature of 96, you don’t necessarily need to worry. Although low body temperature is associated with several health risks, in some cases, a temperature of 96 is a normal fluctuation of the body’s temperature.

Normal body temperature varies by person, age, activity, and time of day. The average normal body temperature is generally accepted as 98.6°F (37°C). Some studies have shown that the “normal” body temperature can have a wide range, from 97°F (36.1°C) to 99°F (37.2°C).

between 40 °F and 140 °F

Outside of Illness and Infection, What Raises Body Temperature?

• Warm/Cold weather. External factors, like warm summertime weather or chilly winter weather, can alter the core body temperature.
• Hot showers.
• Hot food & drinks.
• Laying on one side.
• Teething in children.
• Pregnancy.
• Gender.
• Stress.

Low-grade fever The medical community generally defines a fever as a body temperature above 100.4 degrees Fahrenheit. A body temp between 100.4 and 102.2 degree is usually considered a low-grade fever.

If you have a fever, you are very likely to have a contagious illness. If your temperature is anything higher than 100 degrees F, you shouldn’t go to work and expose everyone else to your illness.

As you make progress against the infection, your set point drops back to normal. But your body temperature is still higher, so you feel hot. That’s when your sweat glands kick in and start producing more sweat to cool you off. This could mean your fever is breaking and you’re on the road to recovery.

People often have a cough, feel unusually fatigued, or even experience some shortness of breath for at least several weeks after a mild to moderate case of COVID-19. But they are no longer contagious. These symptoms should improve steadily, but it can take time.

At night, there is less cortisol in your blood. As a result, your white blood cells readily detect and fight infections in your body at this time, provoking the symptoms of the infection to surface, such as fever, congestion, chills, or sweating. Therefore, you feel sicker during the night.

Bacterial infections are caused by bacteria, while viral infections are caused by viruses….Bacterial Infections

1. Symptoms persist longer than the expected 10-14 days a virus tends to last.
2. Fever is higher than one might typically expect from a virus.
3. Fever gets worse a few days into the illness rather than improving.

Shivers may be a sign that your fever is rising. Do not put extra blankets or clothes on. This may cause your fever to rise even higher.

How to break a fever

1. Take your temperature and assess your symptoms.
2. Stay in bed and rest.
3. Keep hydrated.
4. Take over-the-counter medications like acetaminophen and ibuprofen to reduce fever.
5. Stay cool.
6. Take tepid baths or using cold compresses to make you more comfortable.

Drinking cold water lowers the body temperature and takes a fever down. Staying hydrated at any time is important, but when the body is in distress, using the cold water helps tremendously. Adding a squeeze of lemon and a little bit of sea salt during a fever can replace electrolytes that may have been lost.

Most fevers usually go away by themselves after 1 to 3 days. A persistent or recurrent fever may last or keep coming back for up to 14 days. A fever that lasts longer than normal may be serious even if it is only a slight fever.

Fever can cause fluid loss and dehydration, so drink water, juices or broth. For a child under age 1, use an oral rehydration solution such as Pedialyte. These solutions contain water and salts proportioned to replenish fluids and electrolytes. Pedialyte ice pops also are available.