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X-Rays and Atomic Number
These rays, which are produced when rapidly moving electrons collide with the heavy metal anode in the discharge tube, is called X-rays. Explanation: Energy is released in the form of electromagnetic waves when the electrons are suddenly stopped. In the discharge tube, the electrons produced by a heated tungsten filament are accelerated by high voltage….
What is melting point? Definition
The most comprehensive Melting point Definition is, The temperature at which liquid & solid form of a substance co-exits in equilibrium under given pressure, is called Melting point. Normally standard pressure is taken as 1 atmosphere. In other way, we can also define melting point as, The temperature at which solid phase of a substance…
Reactions Kinetics Quiz Online
Reaction Kinetics concepts are essential to learning for every level in chemistry courses. Here, we have compiled many Reaction Kinetics quizzes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical and engineering students (MDCAT,…
Solutions Quiz Online
Solutions concepts are essential to learning for every level in chemistry courses. Here, we have compiled many Solutions quizzes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical and engineering students (MDCAT, ECAT, NUST,…
Molar Volume of a Gas Definition
The volume of one mole of an ideal gas at standard temperature and pressure is called molar volume of a gas and is equal to 22.414 dm3 at STP (Standard temperature & pressure) & 24 dm3 at RTP (Room temperature & pressure). Explanation: At standard temperature and pressure: 2 g of hydrogen (H2) = 1…
Chemistry Mole & Stoichiometry Quiz Online
Chemistry mole & stoichiometry concepts are essential to learning for every level in chemistry courses. Here, we have compiled many chemistry mole and stoichiometry quizzes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical…
