Rust forming on a nail is a chemical change. All the others are physical changes.
No, rubbing alcohol is not an example of suspension. A suspension is a heterogeneous mixture in which particles are suspended in a medium but can settle out over time. Rubbing alcohol is a homogeneous mixture of isopropyl alcohol and water, where the components are uniformly distributed throughout.
rubbing alcohol or glue or sharpies
rubbing alcohol or glue or sharpies
what are the chemical sediments example? An example would be salt. As seawater evaporates from a surface, what is left is salt.
Rubbing alcohol, isopropanol, or isopropyl alcohol does not conduct electricity on its own, but might if something is dissolved in it. Rubbing alcohol is a covalent/molecular compound (an alcohol to be specific) and, therefore, cannot become an electrolyte like, for example, table salt. Electrolytes only come from ionic compounds, not covalent or molecular.
The chemical formula for most hand sanitizers is C3H8O2, which represents isopropyl alcohol (rubbing alcohol). Some hand sanitizers may also contain other active ingredients such as ethanol (C2H5OH) or benzalkonium chloride.
An example is methanol, CH3OH.
Rubbing alcohol, is a liquid prepared and used primarily for application. It is prepared from a special denatured alcohol solution and contains 97.5-100% by volume of pure, concentrated ethonal(ethyl alcohol) or isopropyl alcohol (isopropanol). Individual manufacturers can use their own "formulation standards" in which the ethanol content usually ranges from 70-99% In the UK the equivalent skin preparation is surgical spirit which is always based on an ethyl alcohol-methyl alcohol mixture.
An example of a common volatile organic compound found in hairspray is called ethanol or ethyl alcohol. This compound evaporates quickly after application, helping the hairspray to dry and set the hair in place.
Rubbing alcohol may temporarily discolor or tarnish copper, but it should not cause long-term damage. However, prolonged exposure to rubbing alcohol may eventually corrode the copper surface. It is recommended to rinse the copper thoroughly with water after using rubbing alcohol on it.
Ethyl alcohol is an organic compound
Yes, alcohol does absorb water from the air, it's very hygroscopic - anhydrous copper suphate (for example) may be used to remove water from it.