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How is shredding a paper a non reversible physical change?
it changed from paper to paper.
The process by which food substances are chemically changed into simpler forms that can be absorbed is called?
digestion
How is shreadding paper a physical change?
Shredding paper is a physical change because you can put all the pieces of paper back together again, i.e. it is still paper. The chemical nature has not changed, only the APPEARANCE has changed.
Does paper undergo a physical or chemical change when it is put in water?
Affirmitave, paper goes through a yellowing stage resulting in the fibers of it chemically breaking down.
Is osmosis a physical or chemical change?
Physical. The water is not changed chemically, it is just moved by diffusion across a membrane.
What is paper changed into when has been changed chemically by fire?
Ash and smoke.
Is water absorbed by a paper towel a physical or chemical change?
It is a physical change.
How can matter be changed?
Physically or chemically.
What is test variable?
The dependent variable , which is the one being measured.
What kind of change is burning of paper different from tearing it?
Tearing paper is a simple physical change; you are taking a whole and dividing it without changing its chemical composition. Burning paper is a chemical change; the paper chemically reacts with oxygen in the air in the presence of heat; oxidation.
What scientist that said that atoms can be changed chemically?
Dalton
What is the class of the food that begins to get chemically changed in the mouth?
starches
When granite is chemically weathered what happens?
it is changed to a clay form
Which one is olive drab and chemically treated to?
M9 Paper
What is chemically changed the pan the egg or the fat when frying an egg?
The chemical composition was changed during frying.
What changes when you twisted the paper?
The physical shape of the paper changes, but chemically the paper is still the same because nothing was added or taken away from the paper.
What smaller molecules result when carbohydrates are chemically changed by digestion?
they disolve :)
