Agitation, temperature, and surface area of the dissolving particles determine how fast the substance will dissolve.
to increase the rate of sugar dissolving in a cup of tea:
Agitation - by stirring w a spoon, the sugar solid will be agitated n dissolve faster in tea.
temperature - by heating the tea, the sugar will dissolve faster in tea.
surface area of dissolving particles - by using granular sugar instead of sugar cube, the contact surface area w tea is increased. granular sugar will dissolve faster in tea.