1. breaking a rock in half 2. ripping a piece of paper
Change in color, and change of shape
The physical properties refer to the change in it's physical state like "shape", " size" etc. physical changes involve only the change of physical state. No heat or light is involved. Normally we can get the original form of state after the process for example :- 1) change in shape of balloon changes when we blow air into it 2) the paper can be crush and then the shape can be regained. 3) when the wax melts it's shape can be regained by solidification
liquid to solid, solid to liquid, gas to liquid that sort of thing
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i m finding the answer myself
1. Bending 2. Painting 3. Breaking 4. Scratching 5. Cutting
1> Melting of ice 2> Making of cloud 3> Hammering a metal into sheet
freezing and melting are physical changes
1. stress 2.
CHEMICAL CHANGE1. Melting ice2. Boiling waterPHYSICAL CHANGE1. Baking a cake2. Burning wood
These are physical and chemical changes.
CHEMICAL CHANGE: Such change is a permanent change and substances go through such changes not only alter their outer shape but also change their composition. For example: conversion of milk into yoghurt is a chemical change PHYSICAL CHANGE: Such change is a temporary change and substances go through such changes alter their shape and volume only but composition remains same. For example: water changes into ice and ice melt to water is a physical change.
Because there are currently four known states of matter, one change between each of these states yields three different types of state change. One is the change from a solid to a liquid, which we will call "melting." The second is the change from a liquid to a gas, which we call "vaporization." The third is the change from a gas to a plasma. There are terms for these changes in the reverse direction, and sublimation describes the change from a solid to a gas with no intermediate liquid phase.
examples: 1. heat and x-rays : leads to formation of neoguanosine crosslinks 2. uv light : formation of cyclobutane dimers 3. ionizing radiations
1. Burning of paper 2. Vulcanizing of paper
Physical Changes:1. Breaking a stick of chocolate in half.2. Melting some ice.Chemical Changes:1. Combustion (the burning of something e.g. unleaded fuel)2. Photosynthesis (producing glucose and oxygen from carbon dioxide, water and sun light).These are some I thought from the top of my head, a bit mundane but they will do the trick.
The physical properties refer to the change in it's physical state like "shape", " size" etc. physical changes involve only the change of physical state. No heat or light is involved. Normally we can get the original form of state after the process for example :- 1) change in shape of balloon changes when we blow air into it 2) the paper can be crush and then the shape can be regained. 3) when the wax melts it's shape can be regained by solidification
chemicle changes like solid to liquid liquid to gas solid to gas