Stacy's English Writing Blog

Glass is made from sand,litimestone, and soda ash. First of all, these three materials are mixed together in the right proportions. Sometimes broken glass is added. Next, this misture is heated strongly in a furnace. Then, glass is produced. Fourth, it is shaped into bottles in the mould. After that, the bottles are reheated and cooled to strengthen the glass. Finally, they are ready to be used.