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What are the phase changes of matter?
The phase changes of matter are melting (solid to liquid), freezing (liquid to solid), vaporization (liquid to gas), condensation (gas to liquid), sublimation (solid to gas), and deposition (gas to solid). These transitions occur due to changes in temperature and pressure.
What are 5 physical changes that can occur to a substance?
Melting: The substance changes from a solid to a liquid as heat is applied. Freezing: The substance changes from a liquid to a solid as it loses heat. Evaporation: The substance changes from a liquid to a gas as it is heated. Condensation: The substance changes from a gas to a liquid as it cools. Sublimation: The substance changes directly from a solid to a gas without going through a liquid phase.
What are two phase changes that occur when matter loses heat energy?
Two phase changes that occur when matter loses heat energy are: Solid to liquid: When a substance loses heat energy, it can transition from a solid phase to a liquid phase. This process is called melting. Liquid to gas: Another phase change that can occur when matter loses heat energy is the transition from a liquid phase to a gas phase. This process is known as vaporization or boiling.
In a refrigerator which two phase changes must occur in order to keep the food cold?
In a refrigerator, the two phase changes that occur to keep the food cold are evaporation and condensation. The refrigerant evaporates in the evaporator coils, absorbing heat from the food and cooling it down. Then, the refrigerant gas is compressed, which causes it to condense back into a liquid state, releasing the heat outside the refrigerator.
How does changes occur in the different changes of matter?
Changes in the states of matter occur through processes like melting, freezing, condensation, vaporization, and sublimation. These changes involve the rearrangement of particles at the molecular level due to changes in temperature or pressure. During these transitions, energy is either absorbed or released.
Do inter-molecular forces occur as a result of being in the liquid state or does a liquid state exist because of inter-molecular forces?
The liquid state is caused by intermolecular forces.
What changes occur between a solid and a liquid?
ice
Does melting occur when a solid changes to a liquid?
yes
When does phase changes occur?
When a solid melts or changes to a liquid. When a liquid boils or changes to a gas. or the reverse when a gas condenses to a liquid or a liquid freezes to a solid. Also it is possible for a solid to go directly to a gas without passing through the liquid stage. This is called sublimation and can occur with sulfur when heated, or ice in the winter when the sun shines on it..
What processes occur when a gas changes to a liquid?
This process is called condensation.
What is the effect of heat on solid?
Heat increase molecular vibration in solid and to the certain point, the molecule would overcome the attractive force and change the state to liquid or gas depending on the surrounding pressure.
What are the phase changes of matter?
The phase changes of matter are melting (solid to liquid), freezing (liquid to solid), vaporization (liquid to gas), condensation (gas to liquid), sublimation (solid to gas), and deposition (gas to solid). These transitions occur due to changes in temperature and pressure.
What changes of state occur when wax runs down the side of a candle?
The wax on a candle transitions from solid to liquid as it melts from the heat of the flame. As the liquid wax drips down the side, it cools and solidifies back into a solid state. So, the changes of state that occur are melting (solid to liquid) and solidification (liquid to solid).
What changes would occur at a molecular level if a liquid is placed in cool conditions?
In cool conditions, molecules in the liquid will lose kinetic energy and move more slowly, leading to a decrease in temperature. This can cause the molecules to come closer together, increasing the liquid's density. At very low temperatures, the liquid may crystallize and form a solid.
What are 5 physical changes that can occur to a substance?
Melting: The substance changes from a solid to a liquid as heat is applied. Freezing: The substance changes from a liquid to a solid as it loses heat. Evaporation: The substance changes from a liquid to a gas as it is heated. Condensation: The substance changes from a gas to a liquid as it cools. Sublimation: The substance changes directly from a solid to a gas without going through a liquid phase.
What changes occur at the molecular level when ice cream melts and forms a liquid?
When ice cream melts, the thermal energy from the surroundings causes the hydrogen bonds holding the ice cream's solid structure to break. This breaks the crystalline structure, transforming it into a liquid state. The molecular rearrangement results in a loss of the solid ice cream's rigid shape and a transition into a more fluid and free-flowing state.
Describe the process of condensation When does condensation occur?
It occurs when a gas changes into a liquid. Heat is given off.
