It essentially a mirror on the early versions.
Mercury. It isn't used much these days in thermometers these days as it is very toxic.
Silver nitrate is not toxic, although it is certainly not nutritious. Normally it is used in photography, not in food. Personally I wouldn't eat it.
It is a fine-grit non-toxic abrasive.
"Thermos is a brand name (adjective) not a noun. Brand names are always used as an adjective so the correct usage in a sentence would be "I bought ten Thermos containers." or "The Thermos food containers are on sale at the store this week."
Lead and tin...
They kept the liquid nitrogen in a thermos so it stayed cold. They used a thermos of oil to keep the sodium from contacting air and water.
it tells you about the puarity of silver used to make that ring
Long Johns for pants thermos but I dont know what the shirts are called.
Silver is not considered an essential body nutrient and excessive intake of silver can be toxic to the body. While silver has some antimicrobial properties and is used in certain medical applications, it is not recommended for consumption as a dietary supplement due to its potential toxic effects.
If only the silvering is gone, it can still be used, but it won't be as good. However, quite often the silvering is inside the vacuum compartment; if the silvering has vanished because the glass cracked, it is very probably unsafe to use. A thermal flask works by preventing heat conduction (the vacuum layer will not conduct heat) and by preventing heat radiation (the silver layer reflects the heat back at the contents). Without the silver layer, the heat will not be reflected. The flask will still work, but will lose or gain heat faster that it would if the silvering was intact. Note: The "silvering" on older flasks may be mercury. If the envelope is cracked and the mercury evaporates, it could prove toxic. Newer flasks use aluminum.
1. Mercury is liquid at room temperature 2. It is a poison 3. Mercury vapour -gas that forms over liquid mercury is VERY toxic 4. Used for welding