化学是一门物理科学，可以帮助我们描述和解释我们的世界。它是对物质，其性质，物质如何以及为何结合或分离以形成其他物质以及物质与能量相互作用的研究。存在的每种物质，包括人体，都是由物质构成的。人类几乎触摸，闻到或闻到的所有东西都是由化学物质制成的。化学涉及日常和艰巨的任务，从种植和烹饪食物到清洁我们的房屋和身体，再到发射航天飞机。对基本化学概念的理解在几乎每个行业中都很重要。化学为医学研究，生物科学，纳米技术，地球与大气科学，能源，药学，新材料发现和取证机会等令人兴奋的职业打开了大门。学习化学方法可以帮助您了
Chemistry is a physical science that helps us describe and explain our world. It is the study of matter, its properties, how and why substances combine or separate to form others and how substances interact with energy. Every material in existence, including the human body, is made of matter. Almost everything humans touch, taste or smell is made of chemicals. Chemistry is involved in daily and monumental tasks, from growing and cooking food to cleaning our homes and bodies to launching a space shuttle. An understanding of basic chemistry concepts is important in almost every profession. Chemistry opens doors to exciting careers in medical research, biological sciences, nanotechnology, earth and atmospheric sciences, energy, pharmacy, new materials discovery and forensics opportunities.