When would the kinetic energy of particles be increasing? (Lesson 2)
Water boils at 100°C and turns into steam. What is similar or different between water in these two states (liquid vs. gas)? (Lesson 3)
An ice cube tray full of water is put into a freezer. The water loses thermal energy and maintains 0ºC to undergo a phase change from a liquid to a solid. What energy change occurs in the particles in the water as it undergoes a phase change? (Lesson 3)
An increase in thermal energy leads to _____ (Lesson 4)
A student wants to collect data during an experiment about the transfer of kinetic energy in a sample of water and ice. What tool(s) will help her collect the necessary data? (Lesson 4)
A student records the temperature of several water samples as shown in the table below. Other than the temperature, the water samples are the same. Which sample has the lowest kinetic energy? (Lesson 5)
1. The kinetic energy of particles would be increasing when they are absorbing thermal energy and moving faster.
2. Similarities between water in liquid and gas states include both being composed of H2O molecules. Differences include the arrangement of molecules (more closely packed in liquid state, more spread out in gas state) and the forces between molecules (stronger in liquid state, weaker in gas state).
3. During a phase change from liquid to solid, the particles in the water lose thermal energy, leading to a decrease in kinetic energy.
4. An increase in thermal energy leads to an increase in the kinetic energy of particles.
5. The necessary tool to collect data on the transfer of kinetic energy in a sample of water and ice would be a thermometer to measure the temperature changes.
6. The water sample with the lowest kinetic energy would be the one with the lowest temperature.