What is Pure Substance? Pure substances are substances that are made up of only one kind of particle and have a fixed or constant structure. Pure substances are further classified as …

The substance is acid if the number of hydrogens has decreased (donates hydrogen ions). The substance is the base if the number of hydrogens has increased (accepts hydrogen ions). A …

What Is Specific Gravity? Specific Gravity or relative gravity is a dimensionless quantity that is defined as the ratio of the density of a substance to the density of the water at a specified …

Internal Energy Change Every substance possesses a fixed quantity of energy which depends upon its chemical nature and its state of existence. This is known as intrinsic energy. Every …

A substance transforms from a solid to a gas by sublimation without ever going through a liquid phase. A common example of sublimation is the dry ice, heavy CO2. 2. How is sublimation …

What is Substrate? A substance to which another substance is applied we call it as a substrate. Different sciences have different definitions for it. It is a molecule or a substance that conducts …

Brainstorm Frequently Asked Questions – FAQs What is Avogadro’s Number? The number of units in one mole of any substance is called Avogadro’s number or Avogadro’s constant. It is …

How can you tell the difference between physical and chemical changes? The appearance or form of matter changes during a physical change, but the type of matter in the substance does not. …

What is the melting point? The temperature at which a solid becomes a liquid due to enough heat. For a given substance, its solid form’s melting point is the same as its liquid form’s freezing …

What are Changes of State? A change of state is a physical change in a matter. They are reversible changes and do not involve any changes in the chemical makeup of the matter. …