alcoholMercury is a silver-white to gray substance. If your thermometer is filled with a red liquid, your thermometer contains red dyed alcohol or mineral spirits and not mercury.
Is the red stuff in thermometer poisonous?
The Bottom Line
A broken mercury-containing thermometer can be toxic if the vapors are inhaled. The risk of poisoning from touching or swallowing mercury from a broken thermometer is low if appropriate clean-up measures are taken.
What is the liquid inside the thermometer?
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
Why thermometer mercury is red?
The silvery thread of thermometer mercury fails to perform when the temperature falls below a certain level. They simply substituted a substance that has a lower melting point than silvery, metallic mercury. … And they colored this temperature measuring material red.
Why is the red liquid in a thermometer so thin?
3. The tube in the thermometer that contains the red liquid is very thin so that it is easier to see the liquid move up and down. Since the volume of the liquid only increases or decreases a small amount when heated or cooled, it would be harder to see these changes if the tube was wider.
What happens if you touch mercury from a thermometer?
Mercury is a very toxic or poisonous substance that people can be exposed to in several ways. If it is swallowed, like from a broken thermometer, it mostly passes through your body and very little is absorbed. If you touch it, a small amount may pass through your skin, but not usually enough to harm you.
What happens if you inhale mercury from a thermometer?
Mercury readily turns into vapour at room temperature and when inhaled gets absorbed into the bloodstream and attacks the nervous system.
When a thermometer is called the red liquid inside the thermometer moves down this is mainly because?
Why does the red liquid move down the tube when a thermometer is cooled? When cooled, the molecules in the liquid inside the thermometer get a little closer together. Because the liquid takes up less space, the red line moves down in the tube.
Is it illegal to have a mercury thermometer?
Those days have passed. Since 2001, 20 states have banned mercury “fever thermometers” for medical use, and regulations tighten every year. … But as of today the federal government has more or less killed the mercury thermometer in the United States—NIST has announced it will no longer calibrate mercury thermometers.
What does 37 mean in thermometer?
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). A temperature over 100.4°F (38°C) most often means you have a fever caused by an infection or illness.
What alcohol is in a thermometer?
The liquid used can be pure ethanol, toluene, kerosene or isoamyl acetate, depending on manufacturer and working temperature range. Since these are transparent, the liquid is made more visible by the addition of a red or blue dye.
What is the most likely reason that the red liquid inside of a thermometer moves up when it is heated?
When heated, the molecules of the red liquid inside the thermometer move faster. This movement competes with the attractions the molecules have for each other and causes the molecules to spread a little further apart. They have nowhere to go other than up the tube.
What do F and C means in thermometer?
There are two scales used for taking temperature: Fahrenheit (F) and Centigrade (C).
Why does liquid in the thermometer?
It is used in thermometers because of its high coefficient of expansion. Mercury is the only element that is liquid at room temperature. It does not expand when it freezes, therefore the glass tube of the thermometer is not shattered.
How much mercury is toxic from a thermometer?
Each thermometer contains about . 5-1.5 grams of mercury. One gram of mercury can contaminate a 20 acre lake, enough to cause a public advisory to be issued on the potential dangers of eating fish caught in that lake.
Can you drink mercury?
Background: The oral ingestion of elemental mercury is unlikely to cause systemic toxicity, as it is poorly absorbed through the gastrointestinal system. However, abnormal gastrointestinal function or anatomy may allow elemental mercury into the bloodstream and the peritoneal space.
How would you dispose of the mercury if a thermometer breaks?
Place all materials used with the cleanup, including gloves, in a trash bag. Place all mercury beads and objects into the trash bag. Place the trash bag outside in a secured area and label it as directed by your local health or fire department.
Can you wash mercury out of clothes?
Throw all clothing that came in contact with liquid mercury in the trash. … Wash clothing or other items that were exposed to mercury vapor during the cleanup, but did not get mercury directly on them. “In no case should a vacuum cleaner or broom be used to remove mercury.
What gets rid of mercury?
Certain types of severe cases of mercury poisoning may require chelation therapy. This is the process of removing mercury from the organs so the body can dispose of it. The drugs used in chelation therapy bind to heavy metals in the bloodstream and are then eliminated in the urine.
What STD was treated with mercury vapor?
Mercury was in use by the early 16th century, and remained the primary treatment for syphilis until the early 20th century. Syphilis led to stigmatizing disfigurations that were treated with surgery, including pioneering attempts in rhinoplasty.
When a thermometer is heated the red liquid inside the thermometer moves up which answer choice best explains why this happens?
The molecules in hot water are larger. The red liquid is thin. The molecules of a liquid move faster and move a little faster and get a little father apart. The glass of the thermometer gets cold.