'Soured' means: lactic acid is (microbiologically) formed out of lactose:
(THIS is a chemical change)
C12H22O11 --> (among other compounds) C3H6O3
by anaerobic homofermentative Lactobacillus spp.
IUPAC name: 2-hydroxypropanoic acid = lactic acid = CH3CHOHCOOH
This is a simple sentence using the words "chemical formula".
Combustion is basically a chemical reacting with oxygen to become the oxide and water is produced. So when alcohol combusts, for example, it is changed (burned) to carbon dioxide and water. In other words, there is a chemical change.
The other term for a chemical change is a chemical reaction. They both refer to a reaction between different components chemically to make a product that is different from them in terms of chemical structure.
A chemical change cant be undone and a new substance, so in other words you cant reverse the effects and in the end you get ashes. An example of a chemical change would be burning paper and getting ashes. A physical change can be undone. An example of a physical change would be bending the paper because you can still get the paper back and no new substance is created.
When you burn wood a chemical change occurs.
This is a simple sentence using the words "chemical formula".
A process in which reactants are changed into one or more different products
Correct; a chemical change produces a new substance, or in other words, an existing substance changes into a different substance.
Take out the conjunction (words like 'and' 'but' etc.) and replace with a period, you then have two simple sentences.
Combustion is basically a chemical reacting with oxygen to become the oxide and water is produced. So when alcohol combusts, for example, it is changed (burned) to carbon dioxide and water. In other words, there is a chemical change.
The other term for a chemical change is a chemical reaction. They both refer to a reaction between different components chemically to make a product that is different from them in terms of chemical structure.
It's a physical change because the substance is the same before and after only changing form. In other words, water's chemical formula is H2O and ice's chemical formula is also H2O, so they are the same substance. Therefore it is a physical change.
When you burn wood a chemical change occurs.
A chemical change cant be undone and a new substance, so in other words you cant reverse the effects and in the end you get ashes. An example of a chemical change would be burning paper and getting ashes. A physical change can be undone. An example of a physical change would be bending the paper because you can still get the paper back and no new substance is created.
fizzingcolor change (of course, this exempts artificial coloring)odorformation of precipitateproduction of gasformation of new substance (elemental bonding)
Yes because, If you had a BRAND NEW bike, And it wasnt rusted or had any cracks at ALL, It would be obvious that if in a couple years it was completely rusted it would be noticable, In other words ( It is obvious that a substance undergoes a chemicaL WHICH MEANS that a chemical change has happened.) Jade
It is not really a change, at all. Sand is moving from one spot to another. If it truly had to be categorized, I would put it under a physical change. A physical change would be a change in an object you can see with your eyes. However, the chemical makeup of that object does not change. In other words, no new chemical is formed. For example, water may freeze or evaporate, but the chemical makeup of water, no matter what state it is in, is H2O. A chemical change would would result in the formation of one or more new chemicals. For example, burning paper is a chemical change. You have paper and fire, and when you burn the paper up, it gives off CO2, and charred paper, which is different from regular paper.