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What are the two classifications for the changes that matter undergoes?
Physical changeschemical changesYou must understand that matter can be in any one of three PHYSICAL states, liquid, solid or vapor ( a gas ).Changing physical states is not a chemical change, but a direct result of heat or cold application.
What changes from a solid to a gas but skips the liquid?
The process in which a substance changes directly from a solid to a gas is called sublimation. This occurs when the substance's vapor pressure exceeds its melting point, causing it to transition directly from a solid to a gas without passing through the liquid phase.
What is sublimaton?
Sublimation is a process where a substance transitions directly from a solid to a gas without passing through the liquid phase. This typically occurs at temperatures and pressures where the substance's vapor pressure is higher than its triple point. An everyday example of sublimation is dry ice (solid carbon dioxide) turning into carbon dioxide gas.
What are the physical and chemical state of matter?
A physical change is a change in matter that involves no chemical reaction. When a substance undergoes a physical change, the composition of its molecules remains unchanged, and the substance does not lose its chemical identity. Melting, evaporating, and freezing are three types of physical change. For example, water (H2O) is a liquid that freezes to form the solid ice, which may again be melted into water. Because molecules of water and ice are composed of the same chemical elements in the same proportions, the change from water to ice is a physical change. Physical changes include any alteration in the shape and size of a substance. For example cutting, grinding, crushing, annealing, dissolving, or emulsifying produce physical changes. Still another physical change is sublimation, the change from a solid to a gas.CHEMICAL CHANGE: When a substance undergoes a chemical change, the composition of its molecules changes. The properties of the original substance are lost, and new substances with new properties are produced. An example of a chemical change is the production of rust (iron oxide) when oxygen in the air reacts with iron. Chemical changes may also result in physical changes. For example, when wood (a solid) is burned, it is combined with oxygen gas to produce gaseous carbon dioxide (CO2), liquid water, and solid carbon.
What happens during the phase change delay?
During the phase change delay, a substance undergoes a transformation from one phase to another, such as from solid to liquid or liquid to gas, without a change in temperature. This occurs as energy is absorbed or released to break or form intermolecular bonds, which allows the substance to transition between states. The delay continues until the entire substance has completely changed phase, after which the temperature can begin to change again. This process is crucial in understanding phenomena like melting, boiling, and sublimation.
What are the two classifications for the changes that matter undergoes?
Physical changeschemical changesYou must understand that matter can be in any one of three PHYSICAL states, liquid, solid or vapor ( a gas ).Changing physical states is not a chemical change, but a direct result of heat or cold application.
How is the thermal energy of a substance related to it physical state?
The thermal energy of a substance determines its state, since thermal energy, aka internal energy, is the energy the molecules in the substance have. If the energy exceeds the force holding the substance together the substance undergoes a phase change.The physical state of a substance is related to its temperature, the measure of thermal energy. The substance can change states depending on the temperature, e.g. boiling.
What is the difference between vaporization sublimation and condensation?
Vaporization is the process of a substance changing from a liquid to a gas, sublimation is the process of a substance changing directly from a solid to a gas, and condensation is the process of a gas changing to a liquid. Each process involves the transformation of matter between different states.
How is the thermal energy of a substance related to its state?
The thermal energy of a substance determines its state, since thermal energy, aka internal energy, is the energy the molecules in the substance have. If the energy exceeds the force holding the substance together the substance undergoes a phase change.The physical state of a substance is related to its temperature, the measure of thermal energy. The substance can change states depending on the temperature, e.g. boiling.
What changes from a solid to a gas but skips the liquid?
The process in which a substance changes directly from a solid to a gas is called sublimation. This occurs when the substance's vapor pressure exceeds its melting point, causing it to transition directly from a solid to a gas without passing through the liquid phase.
When a cube of ice melts to form a puddle of water a physical or chemical change?
When a cube of ice melts to form water, it undergoes a physical change. This is because the substance remains water in both states, but changes from a solid form (ice) to a liquid form (water) due to a change in temperature.
What is sublimaton?
Sublimation is a process where a substance transitions directly from a solid to a gas without passing through the liquid phase. This typically occurs at temperatures and pressures where the substance's vapor pressure is higher than its triple point. An everyday example of sublimation is dry ice (solid carbon dioxide) turning into carbon dioxide gas.
What happens when a substance sublimes?
Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. Sublimation is an endothermic process that occurs at temperatures and pressures below a substance's triple point in its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid. The reverse process of sublimation is deposition or desublimation, in which a substance passes directly from a gas to a solid phase. Sublimation has also been used as a generic term to describe a solid-to-gas transition (sublimation) followed by a gas-to-solid transition (deposition). While vaporization from liquid to gas occurs as evaporation from the surface if it occurs below the boiling point of the liquid, and as boiling with formation of bubbles in the interior of the liquid if it occurs at the boiling point, there is no such distinction for the solid-to-gas transition which always occurs as sublimation from the surface. At normal pressures, most chemical compounds and elements possess three different states at different temperatures. In these cases, the transition from the solid to the gaseous state requires an intermediate liquid state.
What are the physical and chemical state of matter?
A physical change is a change in matter that involves no chemical reaction. When a substance undergoes a physical change, the composition of its molecules remains unchanged, and the substance does not lose its chemical identity. Melting, evaporating, and freezing are three types of physical change. For example, water (H2O) is a liquid that freezes to form the solid ice, which may again be melted into water. Because molecules of water and ice are composed of the same chemical elements in the same proportions, the change from water to ice is a physical change. Physical changes include any alteration in the shape and size of a substance. For example cutting, grinding, crushing, annealing, dissolving, or emulsifying produce physical changes. Still another physical change is sublimation, the change from a solid to a gas.CHEMICAL CHANGE: When a substance undergoes a chemical change, the composition of its molecules changes. The properties of the original substance are lost, and new substances with new properties are produced. An example of a chemical change is the production of rust (iron oxide) when oxygen in the air reacts with iron. Chemical changes may also result in physical changes. For example, when wood (a solid) is burned, it is combined with oxygen gas to produce gaseous carbon dioxide (CO2), liquid water, and solid carbon.
What are the three physical forms in which a substance can exist?
They are the three states of matter.SolidLiquidGas
Is water condensing a chemical change?
No, it is a Physical Change. Physical Changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (condensation, melting, freezing, vaporization, sublimation) are physical changes. Other examples of physical changes include crushing a can, melting ice, and breaking a bottle. Chemical changes take place on the molecular level. A Chemical Change produces a new substance. Some examples of chemical changes include combustion (burning) and rusting of a metal.
Is the solid state of water a Physical property or a chemical property?
When a substance changes states the chemical make-up of the substance is still the same, so the state of the substance would be a physical property.
