Explain the 3 textures that are used in identifying igneous rocks?

What type of texture will an igneous rock have if it cools slowly?
I said coarse and grained?

Is the process of dissolved minerals getting deposited into the spaces among larger sediments called sedimentary deposition? I said YES

Why is slate more commonly used as a chalkboard than shale?

1 answer

shale is generally soft compared to slate and would crumble if used as a chalkboard.