Which experimental setup would let a student investigate the connection between kinetic energy and temperature? (1 point)

Question

1. 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
2. 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
3. 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
4. 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 1

The best experimental setup for investigating the connection between kinetic energy and temperature would be:

1. 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.

This setup allows students to observe the diffusion of food coloring in water at two different temperatures (10ºC and 40ºC). As temperature increases, molecules move faster, which can be observed by the rate at which the food coloring spreads in the water. This provides a clear link between temperature (which affects kinetic energy) and molecular movement.

Answer 2

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)
1. 3
2. 1
3. 2
4. 4

Answer 3

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

2. 1 - Record temperature of water. Put ice in water. Record temperature after ice melts.

This procedure allows for a clear investigation of how the kinetic energy transfer occurs as ice melts in water. By recording the temperature before and after the ice melts, the student can analyze the changes in temperature, which correlates with kinetic energy and the heat transfer process between the water and the ice. This directly relates to the concept of kinetic energy and thermal energy exchange.

Answer 4

I already know this answer but
Sample Temperature (ºC)
L 40
M 88
N 21
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? (1 point) the answer is
MLN

Answer 5

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

Based on the temperatures you provided:

• Sample M: 88ºC (highest temperature, highest kinetic energy)
• Sample L: 40ºC (medium temperature, medium kinetic energy)
• Sample N: 21ºC (lowest temperature, lowest kinetic energy)

Therefore, the correct order from greatest to least average kinetic energy of the water molecules is MLN.