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What are 2 solid substances that don't go through a liquid state when heated and go straight to gas?
Naphthalene and camphor the process is sublimation
What are two substances of solid?
Two examples of solid substances are ice (solid water) and salt.
Is dry ice smoking at a concert is a physical or chemical change?
The process of dry ice sublimating, or turning directly from a solid to a gas, is a physical change. No new substances are formed, just a change in the physical state of the dry ice from solid to gas.
A solid can change to gas and a gas can change to solid without becoming liquid by?
This process is called sublimation. Sublimation occurs when a solid changes directly into a gas or a gas changes directly into a solid without going through the liquid phase. This happens when the substance's vapor pressure exceeds the surrounding pressure, allowing molecules to transition between solid and gas phases without an intermediate liquid phase.
What are some characteristics for a physical change?
A physical change is a change that can be reversed easily and no new substances are made. Examples are state changes ie. solid to liquid or liquid to gas.
What is the word called when you change a solid straight to a gas?
Sublimation
What are 2 solid substances that don't go through a liquid state when heated and go straight to gas?
Naphthalene and camphor the process is sublimation
What kinds of changes in substances are always physical change?
The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.
Is the formation of a solid a chemical change?
Yes, if it occurs as the result of a chemical reaction. For example, if two clear colorless solutions form a white precipitate (solid) when mixed, that would be an example of a chemical change. The formation of a solid from freezing is a physical change.
What substances change from gas to solid?
Substances that change from gas to solid undergo a process called deposition. Examples include water vapor turning into snowflakes, carbon dioxide subliming into dry ice, and iodine subliming into solid crystals.
What are two substances of solid?
Two examples of solid substances are ice (solid water) and salt.
Change of state for deposition?
This is when a gas goes straight to a solid without turing into a liquid.
Can electricity freeze and become solid like other substances?
No, electricity cannot freeze and become solid like other substances because it is a flow of charged particles and not a physical material that can change states of matter.
Do substances absorb or release heat energy as then change from a liquid to the solid phase?
When a substance changes from a liquid to a solid it releases energy. (You take the heat out)
When substances go directly from the solid phase to the gas phase the phase change is called?
sublimation
When sulfur is bright yellow solid is it chemical or physical change?
The transformation of sulfur from a bright yellow solid to a different colored solid would be considered a physical change because no new substances are formed. The change in color is due to the rearrangement of sulfur atoms, not a chemical reaction.
Is iodine becomes a purple gas a chemical change?
Yes, iodine becoming a purple gas is a physical change, not a chemical change. A chemical change involves the formation of new substances with different chemical properties, whereas in this case, the iodine is just changing its physical state from solid to gas without forming any new substances.
