How Does Physical and Chemical Changes Work?

Physical and chemical changes are like when something you know turns into something new, but sometimes it still feels familiar, and other times it’s totally different.

A physical change is when something looks different, but it's still the same stuff inside. Think of ice melting into water, it’s still H₂O, just in a different form. Like when you crush your favorite cookie into crumbs, it’s still a cookie, just not as pretty anymore.

A chemical change is when something becomes completely new stuff, like baking a cake. When you mix flour, sugar, and eggs together and bake them, they turn into something that tastes totally different. You can’t just press it back into the original ingredients. It’s like turning your crayon into a new color by mixing it with another one, now it's a whole new crayon!

Sometimes you can tell a chemical change happened because there’s bubbling, smoking, or even a color change, like when you mix vinegar and baking soda and watch it fizz up like a volcano!