Which of the following is a chemical change? A. Melting ice B. Breaking a glass C. Burning wood D. Crushing a can 相关知识点: 试题来源: 解析 C。燃烧木材是化学变化。选项 A 冰融化是物理变化;选项 B 打破玻璃是物理变化;选项 D 压扁罐子是物理变化。
Why is the melting of ice a physical change? Change: There are three general types of changes in chemistry. Chemical changes occur when multiple substances interact forming new substances. Nuclear changes occur when the number of protons and/or neutrons in the nucleus change due to radioactive ...
Melting of ice is not a chemical reaction but a physical change. Physical changes are those that do not involve changes in the chemical composition...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your...
Melting of ice is a chemical change View Solution Ripening of fruit is a physical change. View Solution Powdering of sugar is a physical change. View Solution Is rusting of iron a physical change ? View Solution Sublimation of camphor is a physical change. View Solution Sublimation of camp...
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melts the under side of the ice, at the same time that it is melting it more directly above, making it uneven, and causing the air bubbles which it contains to extend themselves upward and downward until it is completely honeycombed, and at last disappears suddenly in a single spring rain...
Ice cubes, held in a flow of water maintained at a constant temperature, melt at a rate that is well expressed by the contracting volume rate equation, familiar from kinetic studies of solid state reactions. The apparent activation energy, 28.5卤3.0 kJ mol 1 between 276.2 and 303.4 K, is ...
This chocolate science makes a great little treat too! Grab some clear bags and ribbon and package up your new chocolate hearts to give to friends. You can alsomake butterandice creamwith kids for moreedible science ideas! Pin What Is The Scientific Method For Kids?
(a) Water boiling (b) Ice melting (c) Rusting of a nail (d) Alcohol evaporating (e) Iodine vaporizing. Physical and Chemical Changes: All changes can be classified as either physical or chemical. When we ...