gas liquid and solid... i think
Those are states of matter. Changes of state are:
Other types of changes of matter are:
1. boiling sugar to create molasses
2. combustion of fuel
3. rusting of metals
growing up, cooking food, burning wood.... you can't un-burn wood can you???
freezing/melting
evaporating/condensing
dissolving/evaporating
hope that helps :)
Breaking of glass
Rusting of metal
Living things rotting
Burning of wood/paper/cloth
Dead people
ice cream butter and melting ice
Wood to ashes maybe
That is a chemical change. Physical changes can be undone. Burning a bit of paper is another non-reversible change.
non example of chemical change: one non example is ice. ice is NOT an example of chemical change.
You will know that it's a non-chemical change because: 1. Non-chemical changes do not form a new substance. 2. They are generally reversible. 3. They are not accompanied by considerable heat change.
non examples are anything made by a human on land that is not natural
Changes occur everywhere, every moment around us. Everything in the world is subject to change. There are five types of changes. 1. Chemical and physical changes. 2. Reversible and irreversible changes. 3. Desirable and undesirable changes. 4. Periodic and non-periodic changes. 5. Slow and fast changes. Chemical changes: That change the chemical composition of the material. Physical change: That are temporary and do not change the chemical composition of the material. They change only the state, colour, and texture. Reversible chages: They can be reversed. Irreversible changes: They cannot be reversed. Desirable changes: Which are desired Undeirable changes: Which are'nt desired. Periodic changes: Which happen after a regular intervals. Non-periodic changes: Which happen irregular of any specific interval time. Slow changs: Which take a long time to occur. Fast changes: Which happen quickly. -Param Gupta, Std. 6, Victorious Kidss Educares
A reversible change is a change you can make, then put back, however a non-reversible change is a change you can make, then it will be stuck like that
1. boiling sugar to create molasses 2. combustion of fuel 3. rusting of metals
That is a chemical change. Physical changes can be undone. Burning a bit of paper is another non-reversible change.
Chemical changes create new substances and cannot be reversed.Burning paperLighting a matchMixing sugar and waterPhysical changes do not create new substances and can be reversed.Crushing a canTearing paperChopping wood
Most cooking processes are chemical reactions. Generally, the reactions are non reversible and once cooked, food cannot be returned to an uncooked state. So, frying potatoes causes a non reversible chemical reaction. The question is not as precise as it might be. Changes can be physical or chemical. They can also be reversible or non reversible but it is important to note that many chemical changes are reversible just as many physical changes are reversible.
A metal sphere rolling along the ground is one non-example. It getting a little warmer or cooler are also non-examples.
non --- Evaporation is reversible by condensation, lowering the temperature.
It changes the chemical composition of the burned object making it kinda hard to reverse
It is not a reversible change. During boiling some components are extracted with hot water from the crushed dried leaves. It is impossible to restore the original leaves.
melting candle wax it changes from a non clear to a clear form of matter
Reversible changes are the chemical reactions that can be reversed, however most are non reversible. The ones that can be reversed is because the reaction can flow both ways.
plasticity describes the deformation of a material undergoing non-reversible changes of shape in response to applied forces.