Body temperature. Usually 98.4 degree Fahrenheit.
Yes, physical changes can usually be reversed because the substance's molecular structure remains the same. For example, melting ice into water and then refreezing it back into ice is a reversible physical change.
a physical change is totally reversible, i.e, you can get the substance you will get back after some physical process like heating, evaporating, etc. thus the substance actually remains the same.
Well, there's mental and physical. Mental: if the people around you aren't kind and always put you down, you're not going to be in top condition. Physical: if air quality or water quality aren't good, then your body will suffer because of it.
A substance's chemical composition, which is determined by the types and arrangement of its atoms, always remains the same regardless of physical or chemical changes that may occur.
why the human body temperature always remains constant in normal person
They're both physical changes. Phase changes are always physical changes. Chemical changes only involve chemical reactions - a change in the identity of the substance. That's why phase changes are physical changes. Ice cream remains ice cream when it melts.
Melting is always physical, like boiling, freezing, condensing etc.
LUN
Cutting hair is a physical change because the chemical composition of the hair remains the same before and after it is cut. The change is only in the physical appearance of the hair, not in its chemical structure.
A driver always need a mirrors for driving because they can look at back of the car and for turning right or left. constance's answer
Melting is always physical.
Physical. Melting is always a physical change.