Use the table to answer the question. Sample Observation 1 The drop of food coloring spreads slowly. 2 The drop of food coloring spreads very quickly. A student places a drop of food coloring into two water samples. Her observations are shown in the table. Which statement best explains the observations in the table? (1 point) Responses The water molecules of sample 1 are transferring more kinetic energy. The water molecules of sample 1 are transferring more kinetic energy. The water molecules of sample 1 are moving faster. The water molecules of sample 1 are moving faster. The temperature of sample 2 is higher. The temperature of sample 2 is higher. The temperature of sample 2 is close to freezing.

The statement that best explains the observations in the table is: The temperature of sample 2 is higher.

This is because if the drop of food coloring spreads very quickly in sample 2, it suggests that the water molecules are moving faster due to higher kinetic energy, which is associated with a higher temperature. In contrast, the drop spreading slowly in sample 1 indicates that the temperature (and thus the kinetic energy) is lower in that sample.

Which experimental setup would let a student investigate the connection between kinetic energy and temperature?(1 point) Responses placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 50 mL of water at 40ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 50 mL of water at 40ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing two drops of food coloring in a second cup with 100 mL of water at 40ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing two drops of food coloring in a second cup with 100 mL of water at 40ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 100 mL of water at 10ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 100 mL of water at 10ºC placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing two drops of food coloring in a second cup with 50 mL of water at 10ºC

The best experimental setup to investigate the connection between kinetic energy and temperature would be:

placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 50 mL of water at 40ºC.

This setup allows the student to compare the behavior of the food coloring in two different temperatures (10ºC and 40ºC) while keeping the amount of water and the amount of food coloring consistent. By observing how quickly the food coloring spreads in each temperature, the student can draw conclusions about the relationship between temperature (and thus kinetic energy) and the diffusion rate of the food coloring.

Use the table to answer the question. Procedure Number Procedure Steps 1 Record temperature of water. Put ice in water. Record temperature after ice melts. 2 Put ice in water. Touch water to determine if it feels colder after ice melts. 3 Measure the mass of the water. Put ice in water. Measure the mass of water as ice cubes melt. 4 Determine temperature and mass of water. Put ice in water. Record the time for ice to melt. A student lists some possible ways to investigate the transfer of kinetic energy using ice in a sample of water. Which procedure would be best to investigate the transfer of kinetic energy? (1 point) Responses 2 2 1 1 3 3 4

The best procedure to investigate the transfer of kinetic energy using ice in a sample of water would be:

1

This procedure involves recording the temperature of the water before and after the ice melts. By measuring the temperature change, the student can directly observe how the kinetic energy of the water changes as the ice (which has lower kinetic energy) melts and enters the water, causing a temperature change in the system.

While procedure 2 involves touching the water to determine if it feels colder, it does not provide a quantitative measurement. Procedure 3 relates to measuring mass but does not directly address kinetic energy transfer, and procedure 4 focuses on recording time, which doesn't provide specific insights into kinetic energy changes. Hence, procedure 1 is the most suitable for this investigation.