Question

1)temperature .............at melting point? A) increasesB) decreasesC does not changeD) first increases then decreases2. Which one is false for salty water?A) Water is the solventB) Salt is the soluteC) Salty water is the solutionSalty water is the solvent​

Answer 1

1) temperature .............at melting point?

C) does not change

2) Which one is false for salty water?

B) Salt is the solute

Answer 2

1) Temperature does not change at the melting point. At the melting point, a substance undergoes a phase change from a solid to a liquid. During this phase change, the temperature remains constant until the entire substance has melted. Once the substance is completely melted, the temperature can continue to increase with the addition of more heat.

2) The false statement for salty water is: c) Salty water is the solution. In a solution, the solvent is the substance that dissolves the other substance, while the solute is the substance that is dissolved. In the case of salty water, the solvent is water and the solute is salt. So, water is the solvent and salt is the solute.