Phsical or chemical change

Answer 1

there are two changes in matter: physical change and chemical change. physical change means the change in size, shape, texture and any other physical characteristics, but no any new substance made or added. while in chemical change, there's a change in the object's physical appearance but also made a new substance.

Answer 2

Physical change does not change a substance. It could change shape - for example cutting a piece of paper in two is physical change. Putting it through a paper shredder is physical change. When ice melts, that is a physical change. So even if it changes state (solid to liquid, liquid to gas, etc), it is still a physical change. Chemical change is different. The substance has changed in a more substancial way. If you lit the paper on fire it is undergoing a chemical change. There are five basic ways to tell if something is a chemical change, and they are: 1) Heat or light is produced. 2) Bubbles or gas are formed. 3) A precipitate is formed (a small solid is formed within what was just a liquid). 4) It is hard to reverse. 5) A new color is present. So water turning into a gas is a physical change, but if you are boiling it (and bubbles are formed) then it is chemical, and physical (if it changes state).

Answer 3

Physical Change-occur when objects or substances undergo a change that does not change their chemical change

Chemical Change-occur when a substances combines with another to form a new substances

Answer 4

Physical: occur when objects undergo a change that does not change their chemical nature

Example; wood burning turns to ash.

Chemical: there is a chemical reaction,that changes its "appearance"

Example; metal left in rain rusts the rust is the change

Answer 5

A physical change occur when the molecular structure of chemicals are not changed.
A chemical change occur when the molecular structure of chemicals is changed.
Grinding is physical, neutralization of an acid is chemical.

Answer 6

A physical change involves a change in the state or appearance of a substance without altering its chemical composition, such as melting ice into water. On the other hand, a chemical change results in the forming of new substances with different chemical properties, like when iron rusts.

Answer 7

Chemical changes is new substances forms with properties that differ from original substance.

Physical changes is changes of state

Answer 8

Physical change: evaporation of water from a lake.
Chemical change: destruction of iron structures by acid rains.

Answer 9

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