Scientific name: C
Ceramic is a material that is made from another material by heating it up so it changes its internal structure, and then letting it cool off again. Most ceramics are made from clay, which is soft and brittle before it is fired, and much harder and stronger afterwards.
Glass is another example of a ceramic. It is made by heating sand.
A chain is made of links - each link goes through the next link to make one long chain. Chains are usually made from a metal like steel, and are used where rope isn't strong enough. Chains are used to lift heavy containers with a crane, or to pull very heavy loads behind a truck or tractor.
Very small chains are used for jewellery. Decorative chains are usually made from gold or silver.
Cis forCinder block
Cinder blocks are fairly lightweight concrete blocks used for building walls. They are usually hollow. Their name varies depending on what is used as an aggregate. Cinder blocks can be called concrete blocks, cement blocks, foundation blocks, breeze blocks (UK), besser blocks (Australia) or clinker blocks. The lighter, lower quality types of cinder blocks use industrial wastes like ash as an aggregate.
Cis forCobblestones
Cobblestones are stones that were used to pave streets before concrete and asphalt were invented. They were typically smooth stones found in a riverbed. Because the stones could be all different sizes and were placed so they fit together without gaps, they have given rise to the phrase "cobbled together".
Concrete is a something you can use to make roads, buildings, parts of houses and fences out of. Concrete is used more than any other building material.
Concrete is made from cement, gravel, lime, sand and water. It starts as a dry mix of all the powders, and after water is added it will go hard within a matter of hours from a chemical reaction.