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It's a physical change because it alters the physical state (size, amount, shape, etc) of the object. It is still chemically identical before and after the change, however the physical characteristics have been changed.
A chemical change is one that alters the chemical composition of the item, for example the rust on a piece of iron is a chemical change because the new chemical composition is iron-oxide as opposed to iron.
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Is crumpling a sheet a paper a physical or chemical change?
Well because the paper is flat and when you crumple it, it is changing and getting wrinkly and in a crumpled form,
What changes occur to raw materials during the paper making process?
Papermaking is a series of physical and chemical changes. The physical and chemical changes will depends on raw material used and grade of paper manufactured. For a typical north American paper mill which uses wood for making copying paper, following changes will take place. Operation Type of Change Logging Physical Barking (Removal of bark) Physical Chipping Physical Screening Physical Cooking Chemical Washing Physical Chemical Recovery Chemical Bleaching Chemical Washing Physical Refining Physical Sizing Chemical & Physical Screening Physical Cleaning Physical Wet-end chemical addition Chemical & Physical Sheet Formation Physical Pressing Physical Drying Physical Calendaring Physical Winding Physical Rewinding Physical Cutting Physical
How will you classify matter as physical or chemical?
Physical never changes what it is; For example if you boil water its physical because you can change it back to water from precipitation, or if you tear a sheet of paper up it's still paper. Chemical- changes it's whole from it can never go back to what it was; Example, burning wood
Is bleaching a sheet and a pillowcase phisycal or chemical change?
If the sheet is turning into a pillowcase, it would be a physical change. The sheet is not changing anything but its shape to become a pillowcase, and it most likely can be reversed to turn back into a sheet.
Is making paper from wood a chemical or physical change?
Papermaking is not one single unit operation but a series of operations some of them such as pulping and bleaching etc. are chemical change while sheet formation, pressing, drying etc. are physical change.
Is crumpling a sheet a paper a physical or chemical change?
Well because the paper is flat and when you crumple it, it is changing and getting wrinkly and in a crumpled form,
Is cutting a paper physical or chemical change?
It is a physical change because it is still a sheet of paper.
A sheet of paper is torn in half Another sheet is burned A third sheet of paper is crumpled into a ball What kind of change has each sheet of paper undergone?
The torn sheet has undergone a physical change, the burned sheet has undergone a chemical change, and the crumpled sheet has undergone a physical change.
What kind of change has each sheet of paper undergone?
Depending on the experiment, there will be a series of physical and chemical changes.
What changes occur to raw materials during the paper making process?
Papermaking is a series of physical and chemical changes. The physical and chemical changes will depends on raw material used and grade of paper manufactured. For a typical north American paper mill which uses wood for making copying paper, following changes will take place. Operation Type of Change Logging Physical Barking (Removal of bark) Physical Chipping Physical Screening Physical Cooking Chemical Washing Physical Chemical Recovery Chemical Bleaching Chemical Washing Physical Refining Physical Sizing Chemical & Physical Screening Physical Cleaning Physical Wet-end chemical addition Chemical & Physical Sheet Formation Physical Pressing Physical Drying Physical Calendaring Physical Winding Physical Rewinding Physical Cutting Physical
Is wadding a sheet of paper a chemical change?
Physical change. The paper is still a piece of paper; nothing happened to the chemical composition of it.
A physical change differs from a chemical change in that waste products are formed through chemical changes?
Not necessarily. This only happens in decomposition reactions, where energy reacts to break apart a compound. In, say, a synthesis reaction, sodium and chlorine combine, but don't leave a waste product. A physical change differs from a chemical change in that the product is the same substance, while in a chemical change it forms a/some different substance. Think about ripping a sheet of paper-is it still paper? If you burn the sheet of paper-is it still paper
How will you classify matter as physical or chemical?
Physical never changes what it is; For example if you boil water its physical because you can change it back to water from precipitation, or if you tear a sheet of paper up it's still paper. Chemical- changes it's whole from it can never go back to what it was; Example, burning wood
Why is it hard to crumple a full sheet of paper with one hand?
It may or may not be hard, depending on your hand size and strength. Since the paper is bigger than most hands, some people have difficulties crumpling them. I just half crumple a sheet and throw it away.
Is bleaching a sheet and a pillowcase phisycal or chemical change?
If the sheet is turning into a pillowcase, it would be a physical change. The sheet is not changing anything but its shape to become a pillowcase, and it most likely can be reversed to turn back into a sheet.
A sheet of copper can be pounded into a bowl a physical or chemical change?
It is a physical change because it has not changed its chemical composition.
Is water absorbed by paper towel physical or chemical change?
physical because he water can be gotten back out of the paper towel (drying out).yes
