1.Mario uses a hot plate to heat a beaker of 50mL of water. He used a thermometer to measure the temperature of the water. The water in the beaker began to boil when it reached the temperature of 100C. If Mario completes the same experiment with 25mL of water, what would happen to the boiling point?
A) The boiling point of water will decrease
B) The boiling point of the water will stay the same
C) The water will not reach a boil
D) The boiling point of water will increase
2.Katie's teacher has given her a sample that contains a mixture of salt, sand, and iron filings. She is instructed to separate the mixture into the three individual components. What would be the best physical property to focus on for the first step in separating the mixture?
A) Melting Point
C) Electrical conductivity
3.Jamal is combining salt with water in order to determine its solubility. He notices that after adding ten spoonfuls of salt, no more will dissolve into the water. Which statement best explains his observation?
A) The state of the water is being changed
B) The solution has reached its saturation point
C) There is not enough solute added to the solution
D) The density of the salt is being changed