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Which chemical is hot?

Any chemical can be hot. Any chemical can be cold.


Is dissolving suger in hot water a chemical or physical?

Dissolving sugar in hot water is a chemical change.


How long does it take to heat up spaghetti sauce?

When it begins to simmer/boil/bubble, it's probably hot. Take a spoon and put it in the sauce. Remove the spoon and insert it in your mouth. Is it hot? If so, the sauce is hot. If not, it's not. Seriously, it should only take a few minutes, dependent on how high you have the burner. Too hot will scorch the sauce. FriPilot


Is the periodic table the elements or fire water air and earth?

The chemical elements (e.g. hydrogen through uranium and the "artificial" transuranic elements) as listed on the Periodic Table are a completely different and unrelated concept than the older Aristotelian elements (i.e. fire, water, air. and earth). The closest modern analogy to the Aristotelian elements are the states of matter (i.e. plasma, liquid, gas, and solid). However any chemical element listed on the Periodic Table can be in any of these four states of matter, depending on its temperature (i.e. relatively cold - solid, relatively warm - liquid, relatively hot - gas, relatively very hot - plasma).


What precautions must be taken when making hollandaise?

When making hollandaise sauce, it's important to use fresh eggs, as they are not cooked in the sauce. Be sure to cook the sauce gently over low heat to avoid curdling. Additionally, it is important to keep the sauce warm, not hot, when holding it or it may break.