<prompt> Increased amount of powder in zinc phosphate cement mixture will cause:Decreased strengthDecreased film thicknessDecreased solubilityIncreased setting time  <response>: Factors affecting solubility:Powder-liquid ratio: Thicker mixes show less solubility.Water content of liquid: Any change in the water content is accompanied by increased solubility.Effect of moisture contamination: Premature contact of the incompletely set cement with water results in the dissolution and leaching of the surface. Varnish application over the exposed cement margin is beneficial.Ref: Manappalil P: 91,92 