1. "College Chemistry" (part I)-the main subjects covered by the teaching content of basic chemistry are A: Inorganic chemistry, analytical chemistry, organic chemistry, physical chemistry. B: Inorganic chemistry, analytical chemistry, physical chemistry. C: Inorganic chemistry, analytical chemistry. D: Organic chemistry.
1. "College Chemistry" (part I)-the main subjects covered by the teaching content of basic chemistry are A: Inorganic chemistry, analytical chemistry, organic chemistry, physical chemistry. B: Inorganic chemistry, analytical chemistry, physical chemistry. C: Inorganic chemistry, analytical chemistry. D: Organic chemistry.
化学系Chemistry ____________
化学系Chemistry ____________
1. Which of the following options is the reason why chemistry is known as "the central science of the 21st century"? A: Chemistry is the bridge between many disciplines and involves all aspects of human life. B: Chemistry is a central, practical and creative science. C: Chemistry is an experimental science. D: The history of the development of science and technology has eloquently proved this statement.
1. Which of the following options is the reason why chemistry is known as "the central science of the 21st century"? A: Chemistry is the bridge between many disciplines and involves all aspects of human life. B: Chemistry is a central, practical and creative science. C: Chemistry is an experimental science. D: The history of the development of science and technology has eloquently proved this statement.
Nancy: Hello. Is this the Chemistry Department? Lucy: ______________________
Nancy: Hello. Is this the Chemistry Department? Lucy: ______________________
Tina has chemistry and engineering classes_________
Tina has chemistry and engineering classes_________
Chemistry is the science of substances ___ the science of energy.
Chemistry is the science of substances ___ the science of energy.
2. Organic chemistry is also known as carbon chemistry, which of the following material options belongs to the study object of organic chemistry? A: CO、CO2、C60 B: CO、CO2、CS2 C: CaC2、WC、SiC D: CH4、HCOOH、C2H5OH
2. Organic chemistry is also known as carbon chemistry, which of the following material options belongs to the study object of organic chemistry? A: CO、CO2、C60 B: CO、CO2、CS2 C: CaC2、WC、SiC D: CH4、HCOOH、C2H5OH
Chemistry has been existing for thousands of years.
Chemistry has been existing for thousands of years.
A (chemistry) ______ must be familiar with many kinds of chemicals.
A (chemistry) ______ must be familiar with many kinds of chemicals.
They did the experiment ____ their chemistry teacher had instructed.
They did the experiment ____ their chemistry teacher had instructed.