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?

Question

The water molecules of sample 1 are transferring more kinetic energy.
The temperature of sample 2 is higher.
The temperature of sample 2 is close to freezing.
The water molecules of sample 1 are moving faster.

Answer 1

To determine which statement best explains the observations regarding the diffusion of food coloring in two water samples, we need to consider the relationship between temperature and the movement of water molecules.

If the food coloring spreads more quickly in one of the samples, it suggests that the water molecules in that sample are moving more rapidly, which generally indicates a higher temperature. Therefore, if sample 2 shows faster diffusion of food coloring compared to sample 1, it implies that the temperature of sample 2 is higher or that its water molecules are moving faster.

Given the options, the statement that best explains the observations is:

The temperature of sample 2 is higher.

This conclusion is drawn from the understanding that the rate of diffusion of food coloring into water is influenced by the kinetic energy of the water molecules, which is directly related to temperature.

Answer 2

Which experimental setup would let a student investigate the connection between kinetic energy and temperature?
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
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 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

Answer 3

To investigate the connection between kinetic energy and temperature, the student should set up an experiment that compares the diffusion rates of food coloring in water samples at different temperatures. Kinetic energy is related to temperature, as higher temperatures result in faster-moving molecules and thus faster diffusion.

Among the options provided, the best experimental setup is:

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 diffusion of food coloring in water samples with significant temperature differences (10ºC and 40ºC), which would result in different kinetic energies for the water molecules. By observing how quickly the food coloring spreads in each sample, the student can directly investigate the connection between temperature, kinetic energy, and diffusion rate.

Answer 4

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
4
2
3

Answer 5

It looks like you're referring to a list of procedures (1 through 4) for investigating the transfer of kinetic energy using ice in water, but those procedures are not provided in your question. To determine which procedure would be best for investigating the transfer of kinetic energy, I would typically look for an experiment that clearly demonstrates how the kinetic energy of the moving water molecules interacts with the ice and leads to changes in temperature or state.

If you could provide the descriptions of the procedures 1, 2, 3, and 4, I would be happy to help you analyze them and identify the best one for your investigation!

Answer 6

which one

Answer 7

I apologize for the misunderstanding, but it seems like the specific procedures (1, 2, 3, and 4) you are referring to were not included in your message. To provide an accurate recommendation on which procedure would be best to investigate the transfer of kinetic energy using ice in a sample of water, I need to know the details of each procedure.

Could you please share the descriptions of the specific procedures? Then I can help you evaluate which one would be most effective for your investigation.

Answer 8

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
4
2
3

Answer 9

To investigate the transfer of kinetic energy using ice in water, the best procedure would be one that allows for clear measurements related to temperature changes and the interaction between the kinetic energy of the water molecules and the ice.

Here's a brief analysis of the options given:

1. Record temperature of water. Put ice in water. Record temperature after ice melts.

   • This procedure effectively measures the temperature change before and after the ice melts, providing direct evidence of how the kinetic energy of the water affects the melting of the ice.

2. Put ice in water. Touch water to determine if it feels colder after ice melts.

   • This is largely qualitative and does not provide specific data on temperature changes or kinetic energy transfer.

3. Measure the mass of the water. Put ice in water. Measure the mass of water as ice cubes melt.

   • This procedure focuses on mass changes rather than temperature and kinetic energy, which is less relevant for investigating kinetic energy transfer.

4. Determine temperature and mass of water. Put ice in water. Record the time for ice to melt.

   • This procedure provides information on both temperature and time, which could help analyze the rate of melting, but the mass measurement can be more complex and may not directly relate to kinetic energy transfer.

Given this analysis, the best option for investigating the transfer of kinetic energy is:

1. Record temperature of water. Put ice in water. Record temperature after ice melts.

This option allows for a clear measurement of temperature changes, which are directly related to the transfer of kinetic energy in the water as the ice melts.

Answer 10

The table shows the temperature of three water samples. Which list shows the samples in order from greatest to least average kinetic energy of the water molecules?
M, L, N
N, L, M
L, M, N
N, M, L

Answer 11

The average kinetic energy of water molecules is directly related to the temperature of the water samples. The higher the temperature, the greater the average kinetic energy of the molecules.

To determine the order from greatest to least average kinetic energy, you would need the actual temperatures of the samples M, L, and N. However, since I do not have the specific temperatures provided in your question, I will outline the general approach to answering this question:

1. Identify the temperatures of samples M, L, and N.
2. Arrange these temperatures in descending order (from highest to lowest).
3. The sample with the highest temperature has the greatest average kinetic energy, and the one with the lowest temperature has the least kinetic energy.

If you can provide the temperatures associated with each sample, I can help you determine the correct order from greatest to least average kinetic energy.