Yes. Water and all other liquids are substances. A substance is physical matter or material.
Water is water even when mixed. But when mixed with another substance it should be called a mixture.
Yes, but in the solid form it is called 'ice'. Similarly when water boils the vapor produced is still water but is called water vapor or 'steam'.
yes, all it is is frozen water
When added to water, HCl would dissociate into H+ and Cl-. The H+ would form with water to make H3O+, increasing the pH of the substance.
The unknown substance would have to be a basic solution. At least more basic than the initial solution. The pH scale ranges from 0,Most acidic, to 14, Most Basic. If the pH of your solution increases when the unknown substance is added, then it would lead you to believe that the added substance is of a basic nature.
Liquid soap:The water turns soapy and if you drink it, you would probably get sick and it would taste gross. Non-liquid Hand soap:The water would still get soapy, but not as bad as liquid soap (unless if you leave it in the water for a long time) It still wouldn't be the best to drink still.
A mixture of oil and water is a mixture, not an element. If by substance you mean not a pure substance (element or compound), then oil and water would be a substance (that is a mixture). If you mean oil and water separately, then oil is a mixture of hydrocarbons, and water is a compound (pure substance).
The premise of this question is incorrect. When NaOH is added to water the hydroxide concentration increases. NaOH is a base. If a substance decreases hydroxide concentration it would be an acid.
A chemist, in describing all the properties of "Substance A" would note that "Substance A is insoluble in water".
Nothing because water is the only substance which has a PH of 7. Anything added to the water would change the PH unless you added pure water to it.
I would like to know what important substances that can be made from Quicklime?
It means a chemical/ substance, that cannot be dissolved in a liquid. An example would be starch and water, as starch is insolute when added to water.
When added to water, HCl would dissociate into H+ and Cl-. The H+ would form with water to make H3O+, increasing the pH of the substance.
No. The same would be when water melts or freezes. It is still water.
When a substance changes states the chemical make-up of the substance is still the same, so the state of the substance would be a physical property.
The unknown substance would have to be a basic solution. At least more basic than the initial solution. The pH scale ranges from 0,Most acidic, to 14, Most Basic. If the pH of your solution increases when the unknown substance is added, then it would lead you to believe that the added substance is of a basic nature.
hcl
Liquid soap:The water turns soapy and if you drink it, you would probably get sick and it would taste gross. Non-liquid Hand soap:The water would still get soapy, but not as bad as liquid soap (unless if you leave it in the water for a long time) It still wouldn't be the best to drink still.
Water is a compound having a chemical formula of fixed proportions, and as such is a pure substance. Its chemical formula is H2O, in which the two hydrogen atoms are covalently bonded to the oxygen atom.
A mixture of oil and water is a mixture, not an element. If by substance you mean not a pure substance (element or compound), then oil and water would be a substance (that is a mixture). If you mean oil and water separately, then oil is a mixture of hydrocarbons, and water is a compound (pure substance).