Question

answer the following questions. also indicate what resource you used to find the information. 1) draw the heating/cooling graph of water and all three states of matter. 2) what is the difference between a solid state and a gaseous state of the same material, like water or gold? 3) why is the freezing point of a material the same temperature as the melting point? 4) while matter changes states, does it also change temperature?

Explanation:

1. To draw the heating/cooling graph of water, start with ice (solid) at a low - temperature. As heat is added, it melts at 0°C (the melting point), becoming liquid water. Then, as more heat is added, it boils at 100°C (the boiling point) and turns into steam (gas). The graph has flat sections at the melting and boiling points where the temperature remains constant while the state changes. A standard high - school chemistry textbook or online educational resources like Khan Academy can be used.
2. In a solid state, the particles of a material are closely packed and have a fixed position and shape. In a gaseous state, the particles are far apart, move freely, and have no fixed shape or volume. For example, ice (solid water) has a definite shape, while steam (gaseous water) fills the container it is in.
3. The freezing point and melting point are the same temperature because they represent the same equilibrium point between the solid and liquid states of a material. At this temperature, the rate of particles leaving the solid (melting) is equal to the rate of particles becoming part of the solid (freezing).
4. While matter changes states, its temperature does not change. The heat energy is used for the phase transition (e.g., melting, boiling) rather than increasing the kinetic energy of the particles, which would change the temperature.

Answer:

1. A heating/cooling graph of water has flat sections at 0°C (melting/freezing) and 100°C (boiling/condensing) with rising and falling temperature sections in between. Resources: High - school chemistry textbook or Khan Academy.
2. In a solid, particles are closely packed with a fixed shape; in a gas, particles are far apart and have no fixed shape or volume.
3. Because they represent the same equilibrium between solid and liquid states.
4. No.