There are a few ways to increase the viscosity of water. One thing to add to water to increase viscosity is sugar.
methamphetimeins
polyacrylamide or xanthanum gum
Please add more water to decrease the mixture's viscosity.
help to increase water tension by changing the viscosity of water
The viscosity of the liquid will increase.
polyacrylamide & XANTHANUM GUM
Usually the increase in temperature decreases the viscosity of a liquid due to weakness of intermolecular attractions but some mixtures show an increase in viscosity with the rise of temperature as egg (proteins).
viscosity decreases with increase in temperature
Lowering the temperature the viscosity is higher.
The viscosity increase when the number of carbon atoms in a chain increase.
The only thing you can add to water to increase its volume is more water.
The viscosity increase when the temperature decrease.