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Is a pellet of sodium is sliced in two a physical change or a chemical change?
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
How would you determine if a chemical change had occurred?
Some characteristics of a chemical change are: - change of smell - change of color - release of gases - change of temperature - formation of a precipitate - change of the aspect - change of pH in solutions - change of viscosity - flames or explosion etc.
What is a sign that a chemical change has occurred smoke broken pieces change in shape or change in state?
The production of smoke from something burning would be a sign of a chemical change. Broken pieces, change in shape, or change in state are all physical changes.
If iodine were not available how would you determine whether starch hydrolysis had occurred?
If iodine is not available, determine whether starch hydrolysis has occurred using a refractometer or plot the yeast that forms.
Would you get a physical or chemical change if you broke a mineral in half?
Physical change
How would you determine if a chemical change has occurred?
There are a few ways... 1) the identity of the substance changed 2) there was a gas released (fizzing, bubbles, etc.) 3) color change (even though color change is a physical property, it might be caused by a chemical reaction)
Is a pellet of sodium is sliced in two a physical change or a chemical change?
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
How would you determine if a chemical change had occurred?
Some characteristics of a chemical change are: - change of smell - change of color - release of gases - change of temperature - formation of a precipitate - change of the aspect - change of pH in solutions - change of viscosity - flames or explosion etc.
What is a sign that a chemical change has occurred smoke broken pieces change in shape or change in state?
The production of smoke from something burning would be a sign of a chemical change. Broken pieces, change in shape, or change in state are all physical changes.
If iodine were not available how would you determine whether starch hydrolysis had occurred?
If iodine is not available, determine whether starch hydrolysis has occurred using a refractometer or plot the yeast that forms.
Is forming a bar of gold into wire a chemical change or a physical change?
This would be a physical change.
How are physical properties differ from physical changes?
A physical change would be a change in a physical property. A "physical property", by itself, may or may not change.
Would you get a physical or chemical change if you broke a mineral in half?
Physical change
Is tear a physical or chemical change?
A physical change. A chemical change would be, for example, burning clothes, or dissolving clothes.
Is evaporated gasoline a chemical change?
No, it would be a physical change. During a chemical change, substance(s) are changed into different substances. An example of a chemical change would be the rusting of iron but a physical change would be freezing water; or in this case, evaporation.
Is transferring graphite from pencil to paper when writing a chemical or physical change?
physical change. You know that it is a physical change because it can be reversed. An example of a chemical change would be cooking an egg. Because you cannot reverse the process.
Would freezing an object be physical change or chemical change?
Physical changes and Chemical changes are both the same - this would be a reversible change.
