melting butter cause you can freeze it back
Physical changes refer to alterations that affect the appearance or state of a substance without changing its chemical composition. Examples include changes in shape, size, color, or state (solid, liquid, gas). These changes are usually reversible and do not involve the formation of new substances.
no its speed that definds the rate change of position
No. It's the (change in speed) divided by the (change in time), plus it really ought to have the direction of the change stated also.
Acceleration can change as time changes if there is a change in the velocity of the object. Acceleration is the rate of change of velocity over time, so any change in velocity will result in a change in acceleration.
No, it is a chemical change. ---------------------------------- Yes, it is a physical change because this change not involve a chemical reaction but a nuclear reaction followed by a change in the number of protons and neutrons.
oxidation is a chemical change
boiling a phyisical change... but not chemical ( making it a new substance )
mountain
See: http://www.fbi.gov/employment/employ.htm
from phyisical education we are able to suport our physical life
In the furnace, the clay undergoes a chemical change called dehydration, where water molecules are driven off from the clay particles due to the high temperature. This process helps to strengthen the clay and prepare it for further shaping and firing.
long day of work, phyisical abuse, no legal standing
They normally work only regular business hours.
When a candle burns the solid wax melts to liquid and then it gets oxidized. This change of solid in to liquid is a physical activities of changing the phase of a substance.
it is a physical change. when salt and water is mixed . salt dissolves in water. here salt is not disappearing anywhere. its state is changing. chemical change means , once its reacted it cannot be regained . but here even though it is dissolved through evaporation we can regain the dissolved salt. its just a physical change.
Paralysis of limbs, frequent urination, and trembling are some of the physical signs of stress.
map represent an area on apiece of paper it also show phyisical features by symbols