Aluminium is the third most common
element on the surface of the earth over 7 percent. Oxygen and silicon are much
more, but both are non metals, whereas aluminium is metal. Aluminium is in the
soil in the form of aluminium silicates. It consists of aluminium, silicon and
oxygen, with other common elements.
The most common rock is in the form
of granite. It is made of three subtances : quartz, feldspar and mica. Feldspar
and mica are aluminium silicates. Feldspar by the action of wind and weather can
becomes clay. A pure kind of clay is used in manufacturing dishes and pots. All
of us have eaten from dishes made of this pure clay. A general name for these
product is ceramics. So we have first example of the uses that let us call
aluminium as the element of the kitchen. Here, it is also mentioned about
using of mica but I don’t understand what is the meaning of its using “to
make a window in the door of a stove
because heat doesn't damage the mica”?
Aluminium metals or compounds are so
common and cheap which before it was more costly than silver and almost as
costly as gold. It has been plentiful metal and many important uses have been
discovered for it.
In the past, men uses stone to make
weapons and buidings before using metals. Metal has the strength but heavier
than stone. Whereas, aluminium combines the two things. It has the strength of
metal and lightness of stone. For some things, lightness is more important than
strength so it is much used. Example : in airplanes, automobiles, etc. Much
more advantages of aluminium else that are mentioned in this book.
Aluminium doesn’t rust. Aluminium is
an excellent metal for pots that are used in cooking. The aluminium becomes
very hot very quickly. Aluminium is light, which makes cooking easier for women
who work in the kitchen.
Concerning languanges used in this
book, there is little words that I don't understand but it isn't problem
because almost of all is simple and to be understood easily. Each chapter
consists of matter that its pages isn’t thick. It doesn’t make reader difficult
to understand entire of its content. This
book is a small book and can be used as basic reading to add our knowledges
about somethings around you.
