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I think this refers to catalysts as these are considered not to be changed by a reaction-- sometimes this true when molecules react on the surface of a catalyst bu sometimes the catalyst does get involved in the chemical reaction- but is regenerated.
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∙ 15y ago
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If halogen atoms replaced hydrogen atoms in the molecules would the geometry of the molecules change?
Ya yo
Why did the number of the water molecules on each side of the membrane change where as the number of sugar molecules stayed the same?
The membrane is permeable to water but not to sugar.
When gaseous molecules are compressed they tend to?
They tend to change density, temperature or energy.
What causes matter to change its state?
Temperature. Temperature causes matter to change state.
Why is ice in liquid water at 0 degrees an example of physical equilibrium?
This is an example of physical equilibrium, because if you look at the two phases (physical property) of water at zero degrees C, they both exist. At 0ºC, the molecules of water go back and forth between being a liquid and a solid, thus the equilibrium.
What process causes water to change color from food coloring?
This is the diffusion of the coloring agent molecules in water.
What causes molecules energy that causes them to vibrate?
Heat!
What causes the attraction between water molecules causes?
cohesion is the answer
How does the motion of the molecules change evaporation?
They go from moving around slightly, to moving around quickly and separating from one another. This is causes by evaporation.
What causes changes in enzyme shape?
The shape of the enzyme must match the shape of the substrate. ... Higher temperature generally causes more collisions among the molecules and therefore ... bonding within the protein molecule change and the molecule changes shape.Can cause the enzyme to change shape? If you mean What causes it to change shape, mainly it's heat.
What happens to water molecules as the temperature increases?
Water molecules will gain thermal energy as temperature increases. This will cause them to "move around" or "vibrate" more because they are thermally excited by increasing heat. At some point, the excitation is so great that the water, which we frequently see as a liquid, will evaporate or boil off to change state into a vapor or gas.
What causes the greatest increase in the motion of molecules in a system?
One thing that causes the greatest increase of motion of molecules is an increase in temperature.
Is bacon grease solidifying physical or chemical change?
Frying bacon is a chemical change. In addition to simply heating the bacon, frying it causes certain molecules to react and change. For instance, some protein molecules may be broken down. This is why cold fried bacon tastes different than cold raw bacon.
What determines how molecules are distributed in diffusion?
The concentration gradient is what causes molecules to diffuse.
How does the motion of the molecules change during evaporation?
They go from moving around slightly, to moving around quickly and separating from one another. This is causes by evaporation.
What causes the pressure inside oxygen tanks to change as they are filled?
The number of gas molecules changes.the number of gas molecules changes
What causes friction in a machine?
Rubbing of molecules.
