What is "chemical"?
Maybe most of us will connect chemicals with test tubes, experimental flasks, or the “hazard” signs like skull and crossbones. In fact a chemical is an element, the element is the purest form of chemical known to man.When multiple elements combine, a chemical compound is formed. Anything made up of matter, or anything that is considered a solid, liquid, or gas, is made up of chemicals.
Are all chemicals dangerous?
Of course No. A large number of chemicals not only quite safe but also can make our life better, more convenient and pleasurable.Even the human body is made of chemicals. Just as Margot Wallstrom the former Vice President of the European Commission said “chemicals are a blessing and a curse”.
Can we live without Chemical?
Life without chemistry? We would be back to the stone age! Chemicals play a vital role in our survival, nearly everything a person uses throughout the day is composed of chemicals. They are combined in different ways as to create different substances—from the water one drinks to the gasoline that provides the energy for an automobile.
How does chemistry change life?
The answer lies in our basic life needs: clothing, eating, housing, and transportation etc. Clothing: Textile chemical crafts make our clothes fabrics more various;printing and dyeing chemical process makes our clothes more colorful and beautiful; washing chemical process helps us remove the stain and make our cloth as clean as new… Eating: Chemical swelling agent brings us the delicious food such as bread , cake, steam bun and so on; chemical edible pigment makes our food more colorful and beautiful, which can raise our appetite, increase the secretion of digestive juice, and conducive to digestion and absorption;chemical nutrition fortifier compensates nutritional defects in natural food,help to balance nutrition… Housing: Chemical corrosion-resistant materials make our house and other buildings more rugged and safer; chemical building adhesives make our house more delicate and strict; chemical coatings make our house more beautiful, and home more warm and sweet… Transportation: Chemical rubber technology brings us durable automobile tires; petrochemical provides the fuels for auto-mobile, ship and plan to move; materials chemical make our transportation tools more firm, safe and beautiful…