a physical change is anything that can be undone. for example:
-melting an ice cube (the water can be refrozen into the ice cube)
-bending a piece of metal (the metal can be bent back into shape)
-moving a block from one place to another (it can be moved back)
This is a physical change. Water can take on 3 forms, ice, gas, and liquid. These would be changes in state. Tearing, scratching, crushing, change in state, are all physical changes. Chemical changes must change the substance, not just the appearance. (i.e. Burning fire into ashes, fireworks exploding...)
The importance of physical change is that :-1) No new substance is formed.2) It is a temporary change.3) It is easily reversible.4) Very little heat energy is absorbed or given out.The mass of a substance does not alter in a physical change.
Intellectual Change Physical Change Emotional Change
gravity,potential force,and force
3 oil changes 1000 miles a month equates to 12 000 miles a year. 12 000 miles divided by 4 000 miles equals 3. Therefore 3 oil changes need to be made.
-Solid -liquid -gas
nuclear changes physical '' chemical ''
iiDontt Reallly knoww lol !!
1.) Personal Barriers 2.) physical Barriers 3.) Semantic Barriers
Frost action, alternating wetting and dryness, and temperature changes.
Three physical changes that indicate a redox reaction are color changes (e.g., change in solution color), production of a gas (e.g., bubbles forming), and formation of a precipitate (solid substance forming in the solution).
i yay ii yay iii yay
1.Having menstruation 2.Enlargement of breast 3.Enlargement of hips
it causes the 1. melting of solid substances 2. the solidification of liquid substances\ 3. the deformation of matter.
Menstruation: The monthly shedding of the uterine lining, resulting in vaginal bleeding. Pregnancy: Changes in hormones and physical changes to support fetal growth. Menopause: The cessation of menstruation and decline in reproductive hormones.
This is a physical change. Water can take on 3 forms, ice, gas, and liquid. These would be changes in state. Tearing, scratching, crushing, change in state, are all physical changes. Chemical changes must change the substance, not just the appearance. (i.e. Burning fire into ashes, fireworks exploding...)
Okay now here goes in a physical change no chemical reaction takes place. in chemical change chemical reactions take place. A physical change is reversible but a chemical change is not.In a physical change no new substance is formed(A+B=B) in a chemical change new substances are formed(A+B=C)