The gallium in the image is melting in the person's hand. Which changes will occur on a microscopic level?
O The gallium atoms will gain kinetic energy.
• The gallium atoms will gain potential energy, moving freely from each other.
• The gallium atoms will be moving faster on average.
The gallium atoms will increase in temperature.
All of the given changes will occur on a microscopic level when the gallium in the image is melting in the person's hand.
Choose one
The gallium atoms will be moving faster on average.
Which object will have particles with the highest average kinetic energy? (1 point)
water at 37°C in a glass
O an iceberg at 0°C
water at 40°C in a swimming pool
O a drop of water at 90°C
The drop of water at 90°C will have particles with the highest average kinetic energy.
Thermal energy is transferred to a substance. Which change can occur? (1 point)
• The particles can gain kinetic energy, but the potential energy of the particles will stay the same.
• The kinetic and potential energy of the particles will stay the same.
• The particles can gain potential and kinetic energy.
• The particles will gain potential energy, but the kinetic energy of the particles will stay the same
The particles can gain potential and kinetic energy when thermal energy is transferred to a substance.
What is kinetic energy? (1 point)
• the energy of radiation
the energy of motion
stored energy
• thermal energy
Kinetic energy is the energy of motion.
A fisherman in a boat is drinking a cup of hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison of the lake water and the coffee? (1 point)
The lake will have more total thermal energy, and the particles in the lake water will be moving faster.
• The coffee will have more total thermal energy, and the particles in the coffee will be moving faster.
© The lake will have more total thermal energy, but the particles in the coffee will be moving faster.
• The coffee will have more total thermal energy, but the particles in the lake water will be moving faster.