its rate of expansion is to great.
I would have thought it was air or water
A solution is a clear mixture in which a substance is dissolved in water. (A colloidis a mixture having insoluble particles suspended in water)
Maybe the best word is 'Oil'
Cellulose and starch
Isopropyl alcohol itself a pure substance. It is a compound. However, it is sold as a mixture of the alcohol itself and water.
I would have thought it was air or water
Temperature can be measured with a thermometer.
The best is a thermometer, another way to get the temperature outside is to pour water in a bowl, leave it out there for a couple of minutes and then take a thermometer and put it in the water.
Sarsaparilla syrup would best mask the taste of an oily substance.
An Alcohol thermometer would be the best as it is more sensitive than the mercury thermometer.
A simple way to answer this question is because that thermometer would have a very limited range. Water becomes solid at 0 deg C and so if you where measuring below this your thermometer would freeze up and would give any reading. Water also evaporates at 100 deg C so if you where measuring over this temp the water in the thermometer would evaporate and once again you can not get a reading. Mercury however which is seen in most thermometers provides a large range from - 39 deg C to 357 deg C. For this reason water isn't chosen over other elements/compounds
A digital thermometer is less 'intrusive' - as you don't need to hold it in place for any length of time (as you would with a mercury thermometer). Digital ones give you an almost instant reading.
ionic compounds and polar molecules
You put the thermometer in what you want to get the temperature from. If you want to measure body temperature, the rectum would be the best way to get an accurate reading with an old school thermometer. There are however new thermometers which are as effective in an ear.
Usually water is the best control substance for the Sudan IV test.
A solution is a clear mixture in which a substance is dissolved in water. (A colloidis a mixture having insoluble particles suspended in water)
Temperature is measured by means of a thermometer. Various types exist, and scientists would use the type that best suits their particular experiment or project.