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How does the speed of the molecules change when ice changes to water?
When ice changes to water, the speed of the water molecules increases. In the solid state as ice, the molecules are held in a rigid structure and have minimal movement. As heat is added, the molecules gain energy, causing them to vibrate faster and break free from their rigid arrangement, resulting in the molecules moving more freely in the liquid state.
Why does heating a substance causes molecules to go faster?
When you heat a substance, you're supplying energy to the molecules, which increases their kinetic energy. This increased kinetic energy causes the molecules to move more rapidly, resulting in higher average speed of movement.
What is the molecular motion of solids liquids and gases?
Solid particles vibrate while locked in place. As they receive more energy, particle speed increases. Once the particles have enough energy they break apart and slide past each other as a liquid. The particle speed continues to increase as energy is added. Finally, they gain enough energy to break free and move independently as a gas.
Why does the temperature remain constant in the highlighted portion of the graph even though thermal energy is being added?
The temperature remains constant during a phase change because the added thermal energy is being used to break the intermolecular forces holding the substance together rather than increase the average kinetic energy of the particles. This energy is needed to change the arrangement of the molecules in the substance rather than increase their speed of motion.
Is the temperature of a gas a measure of how hard its molecules hit the walls of its container?
Yes, the temperature of a gas is a measure of the average kinetic energy of its molecules. This kinetic energy is related to the speed at which the gas molecules move, which in turn affects how hard they hit the walls of the container.
When heat energy is added the speed of the molecules?
To hasten chemical reactions.
Molecules have more blank when they are moving?
Molecules have more kinetic energy when they are moving. This energy is proportional to their speed and mass, making them collide with each other and their surroundings.
Why do molecules and atoms speed up when the amount of heat added increases?
When heat is added to molecules and atoms, their kinetic energy increases, causing them to move faster. This is because heat energy is transferred to the particles, making them vibrate and move more rapidly.
How does the speed of the molecules change when ice changes to water?
When ice changes to water, the speed of the water molecules increases. In the solid state as ice, the molecules are held in a rigid structure and have minimal movement. As heat is added, the molecules gain energy, causing them to vibrate faster and break free from their rigid arrangement, resulting in the molecules moving more freely in the liquid state.
What happens to thermal energy if the molicules speed up?
If molecules speed up, they gain kinetic energy which increases the thermal energy of the substance. This causes the temperature of the substance to rise since thermal energy is directly related to the average kinetic energy of the molecules.
The more the molecules an object contain the more heat energy it has?
The heat energy of an object is related to the movement of its molecules, not the number of molecules. Heat energy is determined by the speed and kinetic energy of the molecules, rather than the quantity of molecules in the object.
A measure of the speed of molecules is the?
A measure of the speed of molecules is the temperature of the substance they are in. Temperature is related to the average kinetic energy of the molecules, and the higher the temperature, the faster the molecules will be moving.
What is the amount of energy an object has because of its moving molecules?
The amount of energy an object has because of its moving molecules is called kinetic energy. This energy is determined by the mass of the object and the speed at which its molecules are moving.
Why do Atoms and molecules have kinetic Energy?
Because they: * Have mass * Have a speed
In a gaseous mixture of massive molecules and light molecules with the same average kinetic energy which have the greater speed?
The light molecules would have greater speed because they have lower mass and therefore higher speed for the same kinetic energy. This is described by the relationship between kinetic energy, mass, and speed in the equation KE = 1/2 mv^2, where kinetic energy (KE) is proportional to the mass (m) and the square of the velocity (v).
What measures the average speed of air molecules?
The temperature of a gas is related to the average kinetic energy of its molecules, which is directly proportional to their speed. Therefore, temperature indirectly measures the average speed of air molecules.
What is a measure of the speed of molecules?
The measure of the average speed of molecules in a substance is known as temperature. Temperature is a reflection of the kinetic energy of molecules, with higher temperatures indicating faster molecular movement.
