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depending on the type of clay, it will contain the following compounds:
Silica (oxides and sulfates)
Alumina (oxides)
Various Metal salts
Various Organic materials
a typical Iron (red ) clay is composed of:
Silica
Alumina
Feldspars (silica oxide and Monomirellite)
Iron Oxide
Some clays may contain heavy metals, such as Lead,cobalt,maganese,boron, or other metals depending on it's source.
all of these clays are really just finly ground dirt. and have no scructutural strength unless "vitrefied" that is, heated until near it's Melting point, at wich all the individual partivcles melt into one another and create a single peice,(much like the rock it came from) these tempratures range anywhere from 1100C to 4500C (actually is a bit more complicated that that)
another type of "Clay" is the acrylic and latex based "plasticine" modeling compounds.
these consist of an acrylic base
A plasticizer (such as mineral oil), Aniline and other chemical dyes, Silica dioxide, Calcium Carbonate, and many other materials. these are typically non fired, or in the case of firmo and sculpy, they can be "hardened" at 400-600 degrees.
other modeling compounds can be made from starch, or other organic materials.
( a good modeling compound for kids is 4 parts AP flour , 1 Part table Salt, and 1 1/4 part water . this compound can be cooked in a 300 degree oven for 1 hour, to create surprisingly hard objects (safe and edible (yuk)) to make ornaments and small items.
What else can I help you with?
How do you make homemade clay firm?
The best way to make homemade clay firm is to heat it up. You can heat the clay up in an oven.
How to make a model of a Jaguar out of clay?
You need to be a good with clay to make a model of Jaguar out of clay.
What is making pots by pouring clay into molds called?
Making things out of clay is called ceramics and pottery. Clay itself is not something that we make. It occurs naturally, and we just dig it up and use it.
What is firing clay?
Firing clay is when a clay is fired in a kiln, this is to make the clay stay strong.
How do you make a vagina with modelling clay?
you stick it up your nose (I perfer to stick it up my nose, then suck on it until it rots)
Is air dry clay which is already hard safe to put in a fish tank?
No, dry clay is not safe to put in a fish tank because clay is made up of chemicals and when you put that substance of chemicals into water the chemicals diffuse (spread) and that could harm the fish. But if you don't have any fish in the tank its OK to put hard clay in it.
How do you make homemade clay firm?
The best way to make homemade clay firm is to heat it up. You can heat the clay up in an oven.
What is make up made out of in ancient Egypt?
make up in Egypt were made out of mud, clay and dirt
How do you make a clay person stay up?
toothpicks!
How do you build a mountain out of clay?
you can roll it and make it stand up put green clay under it for the grass
What else did early people of mesopotamia make?
They made clay and if they did they would have to be a clay maker when they grow up.
Can store bought clay kill a hamster?
It could because the clay has many chemicals and also glue
If the soil in your yard is mostly clay how can you change the properties to make it better for growing plants?
you can break up the clay or take it out
If the soil in your yard is mostly clay how can you change its properties to make it better for growing plants?
you can break up the clay or take it out
What 4 chemicals make up DNA strands?
Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are the four chemicals that make up DNA strands. These chemicals are known as nucleotide bases and they pair up in specific combinations to form the genetic code in DNA molecules.
How do you make a clay penguin?
Get clay and make it"it is easy
How to make a model of a Jaguar out of clay?
You need to be a good with clay to make a model of Jaguar out of clay.
