<prompt> Addition of large amounts of platinum to a castinggold alloy will:Decrease its strength and ability to be hardenedDecrease its tarnish resistanceIncrease its fusion temperatureRedden the alloy  <response>: PlatinumIt increases strength and corrosion resistance. It also increases melting point and has a whitening effect on the alloy. It helps to reduce the grain size.The transformation between vapor, liquid, and solid is called the change of state. A change from the solid to the liquid state will require additional energykinetic energyto break loose from the force of attraction. This additional energy is called the latent heat of fusion. The temperature at which this change occurs is known as the melting temperature or fusion temperature.Mannapalli 3 ed page 274; Phillips 12th ed page 18 