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Wiki User
∙ 7y agoMany types of alcohol are used in thermometers, each for a different purpose, but ethanol is supposedly the most common.
Wiki User
∙ 8y agoSo you can see the liquid and where it comes to on the scale. Sometimes blue is used.
Wiki User
∙ 9y agoAlcohol is used in thermometers because it expands and contracts due to temperature at a known and visually significant rate. The red is added to make it easier to see.
Wiki User
∙ 13y agoThe alcohol alone would be very hard to see.
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Why do people use alcohol in thermometers instead of water?
Firstly, mercury has a freezing point of about -38Co. So a mercury thermometer cannot be used below this. Alcohols have a much lower freezing point, some around -100Co . Thus they are useful at much lower temperatures. Though alcohols are usually colourless, they can easily be dyed, usually red or blue. Alcohols however have lower boiling points, and this limits the maximum temperature at which they may be used.
How does a thermomerator measure temperature?
that depends on what type of thermometer. The tube thermometer, the kind with a glass tube with a red liquid in it, uses a small amount of mercury in a very small tube. When the mercury is heated, it expands, pushing further up the tube, as it cools it contracts, going down the tube. A dial thermometer also works on expansion and contraction, but with a coil instead of mercury.
What do you do with eosin?
Perhaps the most common use of eosin dye is in blood testing. Technicians mix the dye with a small amount of blood, then count how many cells absorb the fluorescent red dye. Several serious diseases cause a count of more than 500 eosinophils/microlitre of blood.
How do you make a homemade thermometer?
this is how to make the easyest homemade thermometer projectwhat you need: bowl, water, food dye, bottle of drink like coca-cola bottle,play-doh and a straw.building step:step 1: add water into the bowlstep 2: add dye in the bowl of waterstep 3: put some play-doh on the bottle hole and make sure that you put your play-doh around the straw and around the bottle holestep 4: make sure that there is no air and water in the bottle and that the straw is not blockedstep 5: put your bottle part with the water part, but make sure that you don't put water in the bottle because the water will get upper when coldstep 6: put some ice on top of the bottle and wash your red liquid climb up with the ice on top of it.important note: this project do not work like a normal thermometer because normal thermometer have liquid going up when hot and this project go up when cold, please do not frost the dyed water, only frost the top of the project.i made this project at school and though to tell it to all of youWikiAnswers name: Gentlyjack12rd important note: if you edit my page please say what you want to say and put your WikiAnswers name.THANK YOUif you know how to make a thermometer, say your answer with responsibility and will agreed your answers
How can you use indigo in a sentence?
The rocks in the canyon have varying hues of red, and tan, and indigo. The indigo plant was widely use to make a blue clothing dye.
What is the red stuff in a thermometer?
Ethanol (Ethyl alcohol) with a red dye in it. A thermometer with a silvery expanding liquid is Mercury.
What else can be used in a thermometer instead of mercury?
Alcohol, usually with a red dye in it
Why do they add red dye to colorless alcohol in thermometer?
If the alcohol has color, it is easier to see the bottom of the meniscus.
Why is red dye added to colourless thermometer?
so that the person that is checking the temperature can see it clearly
What is the name of the liquid in a thermometer?
The red liquid in a liquid-in-glass thermometer is mineral spirits or ethanol alcohol mixed with red dye. A grey or silver liquid inside the thermometer is mercury. Mercury thermometers are not used anymore due to the dangers associated with mercury.
Is mercury red in thermometers?
The planet Mercury is grey, similar in colour and general appearance to our moon. Red Mercury is a chemical made of Iodine and Mercury. It was used as a medicine a long time ago before people realised it was actually poisonous. It is either in the form Mercury(I) iodide or Mercury(II) iodide.
What is the red stuff inside thermometers?
In most cases, the red stuff you see in a thermometer is either alcohol or mercury.
What is in red licorice that causes hives?
most likely it is the red dye food coloring that is added to make it red
What beetle was crushed to make red dye?
The Cochineal is an insect used to make carmine dye, a red tint. In various forms it is used to dye fabrics, cosmetics, paints, food coloring for cheeses, yogurts, alcohol, and baked goods. The dye is created from either drying and pulverizing the bodies of the insects, or boiling the dried bodies in which various compounds and elements are added to create the dye. This is not considered a Kosher food in Muslim and Jewish cultures.
What is in the laboratory thermometer?
There are many kinds of thermometer in use. Liquid in glass thermometers usually contain alcohol (dyed red or blue) or mercury (silvery coloured).
Why does lipids turn redish brown when added to Sudan iv dye?
Sudan dye is lipid -soluble dye, thus, it will turn any lipids to red. It mixes with it.
What is blue liquid in thermometer?
A thermometer in which the liquid is blue or red probably contains alcohol with a coloring agent added to make it easier to see. If the liquid is silvery and metallic-looking, it's most likely mercury or one of the new less toxic alloys such as Galinstan (gallium, indium, and tin).
