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There are two points for most substances where a phase change takes place. The energy used to rearrange molecules, called the heat of entropy, must be added or removed before the phase can change. The substances show little or no temperature change at some point in this process.
What else can I help you with?
How much energy is released when a substance is cooled to its original temperature?
When a substance is cooled to its original temperature, no energy is released. Cooling a substance typically involves removing energy from the substance, but this process does not generate energy. The energy removed is used to lower the temperature of the substance.
When a pure substance is heated or cooled but does not change state the energy as heat is the what?
The energy as heat is being used to increase or decrease the temperature of the pure substance. This process involves changing the internal energy of the substance without causing a phase transition.
What is happening to the molecules of a substance when they are heated or cooled?
When a substance is heated, the molecules gain kinetic energy and move faster, causing them to vibrate and collide more frequently, which increases the temperature of the substance. When a substance is cooled, the molecules lose kinetic energy and move slower, reducing the frequency of collisions and vibrations, which lowers the temperature of the substance.
What is thermal expanison?
Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. When a substance is heated, its particles move faster and the material may expand. Conversely, when the substance is cooled, its particles slow down and the material may contract.
What substance would gas change into if it was cooled?
a liquid then if cooled further it would turn into a solid a liquid then if cooled further it would turn into a solid
What does thermochromatic mean?
it refers to a substance undergoing a reversible change of colour when heated or cooled
What substance changes from a gas to a liquid?
Water is a substance that changes from a gas (water vapor) to a liquid (water) through a process called condensation. This change in state occurs when the temperature of the water vapor decreases, causing it to lose energy and form liquid water droplets.
What happens when gas cool down?
When cooled enough it will condense into a liquid. The required temperature changes with the substance.
How do you describe the thermal expansion?
Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. Essentially, as a substance is heated, its particles gain energy and move more, causing the material to expand. Conversely, when the substance is cooled, its particles lose energy and move less, resulting in contraction.
How could you determine the specific heat of a sample of a solid substance that does not react with water?
One way to determine the specific heat of a solid substance that does not react with water is by using the method of calorimetry. This involves measuring the temperature change of the substance when it is heated or cooled, and using the formula q = mcΔT to calculate its specific heat capacity, where q is the heat added or lost, m is the mass of the substance, c is the specific heat capacity, and ΔT is the temperature change.
Molecules in a substance slow down when a substance is?
Molecules in a substance slow down when a substance is cooled. Temperature is the measure of average kinetic energy of particles. Kinetic energy is the energy of motion. So when temperature decreases, the average kinetic energy decreases, so the energy of motion decreases, and the molecule slows down.
Why does temperature stay the same during a phase change?
The temperature, in Physics, means the measure of Kinetic Energy in a substance. When a substance is either heated or cooled, Kinetic Energy is either being added to taken away from the substance. When the amount of KE in the substance changes, the temperature change. However, when the substance is changing its state, because all the KE change in the substance is being used up to change the state, the temperature will not change. When the substance is changing state, the KE can be measured by calculating the heat of fusion and heat of vaporization.
