Class 11

Introduction Mole Concept And its Working Principle The idea of mole is  a convenient way of expressing a substance’s quantity. We have two parts in measurement: the numerical magnitude and the units in which the numerical magnitude is expressed. The magnitude is ‘2’ and the unit is ‘kilogramme’ when the mass of a ball is […]

We’d all like to know how many molecules are present in a particular substance we’re interested in. Molecules and atoms are extremely small objects, both in terms of size and mass. The molar mass is defined as the weight of one mole of a sample. Calculate the molar mass of a molecule by connecting the

What is the Melting Point of a Substance? The temperature at which water transforms from solid ice to liquid water is known as the melting point. At this temperature, water’s solid and liquid phases are in balance.  Because the melting point of water varies significantly depending on pressure, one cannot designate a particular temperature as

What is the Definition of the Melting Point? Generally, the melting point of a substance is defined as the point at which it transforms from a solid to a liquid. The temperature at which a solid transforms into a liquid at atmospheric pressure is referred to as the liquid’s melting point. This is the point

Nuclear processes are accompanied by energy changes, just as chemical reactions. Nuclear processes, on the other hand, have huge energy shifts compared to even the most energetic chemical reactions. In reality, the energy changes in a common nuclear reaction are large enough to cause a quantifiable mass change. The link between energy and mass in

The study of the relationships between system properties that are measurable at the large scale (macroscopic), such as volume and elastic moduli, is defined as thermodynamics by the American Chemical Society. Temperature, pressure, and specific heat are examples of large-scale (macroscopic) properties. As a result, thermodynamics is regarded as a subfield of classical physics.  What

The molecules in a gas must be pushed closer together to liquefy it. This can be performed by lowering the temperature and increasing the pressure. When you increase the pressure on a gas, the molecules come closer and closer until they unite to form liquids at a certain pressure. When a gas’s temperature is reduced,

It doesn’t matter how small or huge a particle of matter is; every particle of matter has some quantity of mass connected with it. The atomic mass of a particle is the amount of mass it contains. In accordance with the international agreement, this is often stated in terms of a unified atomic mass unit

Moseley gave the hypothesis that the fashionable tabular array planned by Dmitri Mendeleev supported the quantity of protons within the nucleus of the associated atom. Moseley’s hypothesis supported the study of wavelengths of X-rays that were emitted by chemical components. It had been this hypothesis that ordered the inspiration for the number. Atomic number and

Introduction: After studying the concept of isotopes, let us look into what isobars are and understand the difference between isotopes and isobars, along with examples of isotopes and isobars. Since the 19th century, scientists have refined their methods to measure mass and weight. By mass, we mean the amount of matter something has; by weight,