(a) Write any four characteristics exhibited by a pure substance?
(b) What happen to sugar when it is dissolved in water? Where does the sugar go? What information do you get about the nature of matter from the this solution of sugar in water.
Answers
Explanation:
The characteristic of a pure substance is that it only contains atoms of only one kind. It has fixed physical and chemical properties, for example, melting point, boiling point, density, solubility, etc.
points
- include freezing/melting point, boiling/condensing point, density, viscosity and solubility.
B) When sugar dissolves, these whole sucrose molecules separate from one another. The molecule itself doesn't come apart: The atoms that make up each molecule stay together as a sucrose molecule. ... Explain that sucrose has polar areas caused by the same type of oxygen-hydrogen covalent bonds as in the water molecule.
Explanation:
(iv) It has definite melting point, boiling point, density etc. (b) When sugar is dissolved in water, the particles of sugar gets settled in between the spaces of the particles of water and fills that space.