well the reason they do that is to see that if there are a lot of those kind of animals or if there is more of them.
The chemical composition of a substance does not change when it undergoes a physical change.
the changes that matter undergoes are the physical and chemical change by:R.yu
After a physical change a substance does not change its chemical composition it simply changes its state as, water to ice or vapours.
no
It does change its physical look but it does not change chemically.
It does change its physical look but it does not change chemically.
All substances have physical changes.
Physical change.
A filtrate that is evaporated to dryness undergoes a physical change.
yes it does
Different for different adhesives. Hotglue for instance is merely a physical change while a 2-component epoxy glue undergoes a chemical change.
maybe..