Difference between revisions of "Chemical Change"
| Line 9: | Line 9: | ||
===Examples=== | ===Examples=== | ||
: Cooking food involves several '''chemical changes'''. Baking a cake and toasting bread causes [[Chemical Reaction|chemical reaction]]s that are used to change the texture and flavour of the food. | : Cooking food involves several '''chemical changes'''. Baking a cake and toasting bread causes [[Chemical Reaction|chemical reaction]]s that are used to change the texture and flavour of the food. | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A '''chemical change''' is a change that results in new [[chemical]]s being formed. | ||
| + | |||
| + | ===About Chemical Changes=== | ||
| + | : '''Chemical changes''' are usually [[irreversible]]. However, some can be [[reversible|reversed]]. | ||
| + | : '''Chemical changes''' [[product|produce]] new [[chemical]]s which have different [[Physical Property|physical]] and [[Chemical Property|chemical properties]] from the [[reactant]]s. | ||
| + | : In a '''chemical change''' the [[atom]]s in [[molecule]]s are rearranged to form new [[molecule]]s. | ||
Revision as of 10:22, 21 December 2018
Contents
Key Stage 3
Meaning
A chemical change is a change that results in new chemicals being formed.
About Chemical Changes
- Chemical changes are usually irreversible. However, some can be reversed.
- Chemical changes produce new chemicals which have different physical and chemical properties from the reactants.
Examples
- Cooking food involves several chemical changes. Baking a cake and toasting bread causes chemical reactions that are used to change the texture and flavour of the food.
Key Stage 4
Meaning
A chemical change is a change that results in new chemicals being formed.
About Chemical Changes
- Chemical changes are usually irreversible. However, some can be reversed.
- Chemical changes produce new chemicals which have different physical and chemical properties from the reactants.
- In a chemical change the atoms in molecules are rearranged to form new molecules.