👨🔬Physical & Chemical👩🔬 (Chemical⚗️ (Examples: (Burning Wood…
👨🔬Physical & Chemical👩🔬
A reaction that rearranges the particles of two or more substance to create at least a new substance.
Burning Wood into : Ash
Soda And Mentos🥤
Chemical Changes is all around us.
Chemical Changes Features😀
Creates a New substance
May absorb or release heat
May change colour, produce odor, create sound, release gas or produce light.
Cannot often be undone/reverse
Something that changes the physical properties of a substance
Cutting a piece of cloth, even if the cloth changes shape and size, it does not create a new substance.👕👖
💧Water is another example, even if water changes form- Gas, liquid or ice, but no matter it's form, water is still water.
Many physical changes can be undone, for example if you put sugar into a hot bowl of water, it won't combine or create a new substance.🤒
Physical changes features😆
Do not form a new substance
May change shape or size
May change state of matter
can often be undone