Which of the following expands most when the temperature is lowered equal volumes of?
Homework 7
| Question | Answer |
|---|---|
| Which of the following expands most when the temperature is lowered? Equal volumes of iron, wood, helium, or water at 4 degrees C? | Water at 4 degrees C |
| During a very cold winter, water pipes sometimes burst because | Water expands when freezing |
| When an iron ring is heated, the hole becomes | Larger |
Which expands more when the temperature is increased?
In general, liquids will expand more than solids with an equal increase in temperature. Similarly, in general, gases will expand more than liquids with an equal increase in temperature. Solids also expand, but not as much as liquids or gases because their particles are fixed in position.
Which of the following forms of energy is most closely related to temperature?
Thermal energy and temperature are closely related. Both reflect the kinetic energy of moving particles of matter. However, temperature is the average kinetic energy of particles of matter, whereas thermal energy is the total kinetic energy of particles of matter.
At what temperature do the combined effects of contraction and expansion produce the smallest volume of liquid water?
At what temperature do the combined effects of contraction and expansion produce the smallest volume for water? 4 degrees.
What contracts the most when the temperature is decreased?
CLASS NOTES. Most substances expand as their temperature is increased and contract as the temperature is decreased. The amount a substance expands/contracts with a change in temperature is proportional to the coefficient of expansion for that material.
Under what condition can the entropy of a system be decreased?
The entropy of a system decreases only when it interacts with some other system whose entropy increases in the process. That is the law.
What expands equally on equal rise in temperature?
All gases expand equally for equal rise in temperature.
Which of the following is most closely related to kinetic energy of molecules?
Final Answer: The average kinetic energy of the particles of a gas is most closely associated with (B) temperature.
Are thermal energy and kinetic energy the same?
Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object. As thermal energy comes from moving particles, it is a form of kinetic energy.
What is meant by translational kinetic energy?
n. (General Physics) the energy of motion of a body, equal to the work it would do if it were brought to rest. The translational kinetic energy depends on motion through space, and for a rigid body of constant mass is equal to the product of half the mass times the square of the speed.
Why do substances expand when their temperature is increased?
Substances expand when their temperature increases because the molecules have more energy and move faster and farther apart.
What are cold contracts?
Most materials contract on cooling. The notable exception to the rule are some phase transitions and water. But even ice contracts on cooling. Water expands on cooling only between 0∘C and 4∘C (including phase transition).
What is a decrease in a materials volume when the temperature is decreased?
Thermal contraction is a decrease in a material's volume when its temperature decreases. As the temperature decreases, the average kinetic energy of the particles decreases and they slow down and get closer together thereby decreasing the volume of the material.
What happens to entropy when temperature decreases?
With decrease in temperature, randomness (entropy) decreases because the motion of particles decreases and their velocity decreases so they have less entropy at a lower temperature.
What process decreases entropy?
When heat is removed, the entropy decreases, when heat is added the entropy increases. Entropy has units of Joules per Kelvin.
Which of the following will expand the most for same rise in temperature D All will expand same a Aluminium C Wood B glass?
(c) Gas will expand more as the inter-molecular force of attraction in gas molecules is least and K.E. is maximum.
Which expands the greatest when heated at the same temperatures?
Gases Answer :Gas. explanation: Gases expand much more than the liquids and the solids. The greater the attraction between the molecules, the smaller the expansion will be.
How is the kinetic energy of the particles related to temperature?
RELATION BETWEEN AVERAGE KINETIC ENERGY AND TEMPERATURE: The temperature of a substance is directly proportional to the average kinetic energy of the substance particles. Because the mass of these particles is constant, the particles must move faster as the temperature rises.
What is the relation between temperature and kinetic energy of gas molecules?
According to the kinetic molecular theory, the average kinetic energy of gas particles is proportional to the absolute temperature of the gas.
When temperature increases the average kinetic energy of the particles decreases?
When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
Is temperature kinetic or potential energy?
Temperature is a measure of the average kinetic energy of the molecules within the water. You can think of temperature as an expression of the "intensity" with which the thermal energy in a body manifests itself in terms of chaotic, microscopic molecular motion.
What is translational kinetic energy vs rotational kinetic energy?
The only difference between rotational and translational kinetic energy is that translational is straight line motion while rotational is not. An example of both kinetic and translational kinetic energy is found in a bike tire while being ridden down a bike path.
What happens to potential energy as kinetic energy increases or decreases?
In all physical processes taking place in closed systems, the amount of change in kinetic energy is equal to the amount of change in potential energy. If the kinetic energy increases, the potential energy decreases, and vice-versa.
Does heat expand and cold contract?
Most matter expands when heated and contracts when cooled, a principle called thermal expansion. The average kinetic energy of the particles increases when matter is heated and this increase in motion increases the average distance between its atoms.
Which generally expands more for an equal increase in temperature solids or liquids quizlet?
The two metals expand at different rates. Which generally expands more for an equal increase in temperature: solids or liquids? Liquids generally expand more than solids.
Which contracts most when cooled?
Most materials contract on cooling. The notable exception to the rule are some phase transitions and water. But even ice contracts on cooling. Water expands on cooling only between 0∘C and 4∘C (including phase transition).
Does metal contract in cold?
When it is cold the kinetic energy decreases, so the atoms take up less space and the material contracts. Some metals expand more than others due to differences in the forces between the atoms / molecules.
What happens to volume when temperature decreases?
These examples of the effect of temperature on the volume of a given amount of a confined gas at constant pressure are true in general: The volume increases as the temperature increases, and decreases as the temperature decreases.
What is contraction with temperature?
Thermal contraction is a decrease in a material's volume when its temperature decreases. As the temperature decreases, the average kinetic energy of the particles decreases and they slow down and get closer together thereby decreasing the volume of the material.
What happens when entropy decreases?
According to the second law of thermodynamics, the entropy of the isolated system always increases. If the entropy of the universe decreases, the universe will start shrinking.