The problem of the air pollution is more and more concerned by the public.This paper is mainly about the indoor air pollution, the main chemical pollutants from building materials and the prevention and treatment methods of indoor air pollution.

Garlic is the human‘s healthy food. The article introduces the chemical ingredients, physiological function, deodorant method, and the product exploitation of garlic. It aims at knowing garlic, preventing diseases, and promoting health.

This paper classified normal and low temperature phase change and heat storage materials, presented their categories and characteristics, discussed their properties, their advantage, disadvantages,and their applications, meanwhile, recommend some methods to overcome their disadvantages.

Scientific literacy consists of science content and its companion meanings. Based on this model, the authorexamined the purposes of junior middle school chemistry curriculum (JMSCC) in past more than twenty years in China by use of document analysis. The JMSCC was divided into four stages and the purpose of the JMSCC in each stage was analyzed. The change trend of the purpose of the JMSCC during this period of time was identified, which historically displays the progress of scientific literacy eductiom in the JSSCC.