Hi! Glass jars start from something that melts into a goo. Here’s how it works in easy steps:
- Ingredients: The main thing is sand (tiny bits of rock). People also add a helper like soda ash and another helper rock called limestone. Sometimes they add old broken glass to recycle.
- Very hot oven: All those things go into a giant, super-hot oven called a furnace. It gets as hot as lava, so the sand and helpers melt.
- Goo called molten glass: When they melt, they turn into a thick, honey-like goo. That goo is called molten glass.
- Shaping: The molten glass is poured or blown into jar shapes using molds or machines. That makes the goo look like a jar.
- Cooling: The new jars are cooled slowly in a special oven so they don’t crack. When they cool, the goo becomes hard glass again.
- Finished jar: Now you have a glass jar for jam, food, or crafts!
Simple idea: it’s like melting sugar to make candy — when melted it’s goo, and when it cools it becomes hard. This happens only in factories because it’s very hot. Don’t try to melt glass at home.