Cast iron
I think it would be cast
I think it would be cast
They are chemicals used to 'cure' sand into a hard molded shape onto which molten metal can be poured, and set into a shape.
brittle
hard and brittle so YES
hard and brittle so YES
You can shape it in the way you want and freeze it until it is hard again.
Ionic solids are brittle and hard as they are bonded with electrostatic bonds.
A solid is a hard thing like wood. Wood is a solid because it can not be squashed but it has a set shape and a set volume. Mainly it can not be poured.
brittle meaning EASILY BREAKABLE so i don't think it is brittle...
hard
Hardness is the question of how difficult it is to make an impression on a substance. Brittleness is the question of how easy it is to break. Granite is a stone which is very hard but not brittle--it is hard to carve and also hard to break. A plank of wood is not as hard as stone but is not very brittle. You can carve on it with a knife but it won't shatter if you drop it. Glass is hard and brittle. Chalk is not hard but it is brittle.