You have placed a cube of ice in a cup of water based on the graph answer the questions that follow: graph attached.
1. when has the ice melted?
2. what temperature does the phase change occur?
3. at 25° c what is the state or states of the water in the beaker?
4. at nine minutes what is the state or states of the water in the beaker?
5. what did you observe about the temperature of the water inside the beaker when ice is still present?
6. explain why sublimation and deposition are classified as a physical change

answer:

explanation:

1) the ice has melted in a short amount of time

2) as soon as the ice starts to cool the outgoing heat from the water to the ice.

3) it is colder than before the ice was put in the beaker.

4) it has warmed back up past the degree of 25 degrees

5) it starts to cool

6) because the heat depositions itself into the ice cubes which then transfers the coldness of the ice cube into the water - not to include when objects cool the neurons inside the water start to shrink more than before.

conservation of mass

mass before something happens = mass afterwards