What melts into gooey glass for bottles and jars?

Short answer for a 5-year-old: Sand melts into gooey glass. People heat sand with a few other ingredients until it turns into thick, sticky glass that can be shaped into bottles and jars.

Step-by-step (easy):

1. Start with lots of sand (the main part is called silica).
2. Add small amounts of helpers (like soda ash and limestone) so the glass melts nicer.
3. Heat everything in a giant oven called a furnace until it gets very, very hot and becomes gooey liquid glass.
4. Shape the gooey glass into bottles and jars, then let it cool so it becomes hard and clear.

Think of it like melting playdough, but much, much hotter — so never try this at home. Only grown-ups in special places do it.

Seven ways to say the question (rephrased):

• What do people melt to make gooey glass for bottles and jars?
• What turns into liquid glass used for bottles and jars?
• What melts to become the sticky glass for jars and bottles?
• What do you heat until it becomes gooey glass for jars and bottles?
• What is melted to make glass bottles and jars?
• What ingredient melts into goo that makes glass jars and bottles?
• What melts and becomes the glass used to make bottles and jars?

If you want, I can draw a simple picture or tell a little story about a sand grain turning into a bottle!