It smells caramelly. Its skin does not have a smell. It smells sweet and sour at the same time, almost like an apple is two things.
It feels velvety, like the inside of my oboe case. It is wet and moist. The outside feels smooth, like plastic. The core feels crusty.
It looks the color chartreuse on the outside. Sometimes it is red. It has speckles on its skin. There are lines on the inside.
It sounds hard when you hit the apple. If you put the apple up to your ear, its echo sounds like the ocean. If you rub it, it makes a soft popping noise.
Where it is brown at the top, it looks like an explosion and feels rough, like sandpaper. It is also very crusty. The apple is sticky.
As you get deeper into the apple, it gets wetter. It also gets much, much softer, like a banana's inside.
The core is much harder to push through. You cannot scratch the core with a toothpick. The places you try to pick with your pick turn brown.
A chunk of apple insides are wavy, chunky, and stringy. They are basically translucent. You can see little drops of water on this chunk.
On the core, it is hard and brown. It doesn't really taste that different. (I accidentally ate a whole apple, core and all, in third grade.)