Solid solution

A solid solution is like when you mix two different things together to make something new, but it's still solid like a rock. Think of it like making a special kind of play-dough! You take two different colors of play-dough and squish them together until you can't see the separate colors anymore. Now you have a new play-dough that's a combination of the two colors.

In the same way, in a solid solution, you take two different materials and mix them together until they become one solid substance. The two materials might not look the same or have the same properties, but they work together to make something new that's both strong and stable. This is how some metals are made stronger or more resistant to things like rust or corrosion.

So, just like your special play-dough, a solid solution is when two materials come together to make something new that's still a solid substance. It's important to mix the materials together just right so that they work together and become one strong and stable substance.