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The speed of the particles in a substance change when what changes?
electrons
Which particle does not change in amount in an atom?
The particle in an atom that cannot change is the number of protons. If that changes, it is no longer the same element.
What property of a substance does the change in temperature indicate?
Change in temperature directly indicates a change in the mean amount of kinetic energy possessed by each particle. It also indirectly indicates a possible change in state, and a possible change in chemical properties too (chemical reactions often involve energy transfer in the form of temperature change).
Is thermal expansion a chemical change?
No, thermal expansion is a physical change, not a chemical change. It occurs when a material expands or contracts in response to changes in temperature, without any change in the chemical composition of the material.
Is it a chemical change physical change chemical property or physical property when hydrogen chloride is a gas at room temperature.?
The observation that hydrogen chloride is a gas at room temperature is a PHYSICAL property.
The speed of the particles in a substance change when what changes?
electrons
How does particle behavior change as an object changes from a solid?
How does particle behavior change as an object changes from a solid to liquid to gas
Which property of the rubber band changes when it is stretched?
Its length, linear density, thickness, and temperature all change.
What type of property is a change of state?
Change of state of a substance is a physical property!
Which particle does not change in amount in an atom?
The particle in an atom that cannot change is the number of protons. If that changes, it is no longer the same element.
Is freezing point a physical property or physical change?
Freezing point is a physical property. It is the temperature at which a substance changes from a liquid to a solid state under standard atmospheric pressure. Physical changes involve a change in state without altering the chemical composition of a substance.
Why weight is extensive property?
An extensive property is a property that changes when the size of the sample changes, weight would change.
Is boiling point a physical or chemical property?
It is a physical property because the element/compound will change without involving a change in chemical composition.Physical
What is the particle model of matter and how does it explain the changes of state that occur with variations in temperature or pressure?
The particle model of matter describes matter as being made up of tiny particles (atoms and molecules) that are in constant motion. Changes in temperature or pressure affect the motion of these particles. With an increase in temperature, the particles move faster, leading to a change in state (e.g., solid to liquid to gas). Changes in pressure can also affect the arrangement and movement of particles, causing changes in state.
How the temperature changes?
The temperature changes as the weather changes and the Earth tilts on its axis, causing the seasons to change.
Does molecular speed change as much as the temperature?
It changes in proportion to the temperature change.
What property of a substance does the change in temperature indicate?
Change in temperature directly indicates a change in the mean amount of kinetic energy possessed by each particle. It also indirectly indicates a possible change in state, and a possible change in chemical properties too (chemical reactions often involve energy transfer in the form of temperature change).
