How Soap perform cleansing action?
Soaps and detergents perform the cleaning action because the polar parts of their molecules are water soluble due to hydrogen-bonding and non-polar parts remain outside water.
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Liquids & Solids State Quiz Online
Liquids & Solids State concepts are essential to learning for every level in chemistry courses. Here, we have compiled many Liquids & Solids State 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…
Dipole-Induced Dipole Intermolecular Forces
Definition: The forces of attraction between polar molecule and temporarily induced molecule (neutral) are called dipole-induced dipole or Debye forces. Explanation: In certain cases, we have a mixture of substances containing polar and non-polar molecules. The positive end of the polar molecule attracts the mobile electrons of the nearly non-polar molecule. In this way polarity…
Sublimation
The direct conversion of solid into vapour without passing through liquid state by heating is called sublimation. Explanation: Sublimation is used to purify solid substances. – Iodine, ammonium chloride, naphthalene, anthracene, and benzoic acid can sublime. A substance to be sublimed is taken in a watch glass covered with an inverted funnel. The funnel is…
MOLECULAR FORMULA DEFINITION
A formula which tells the actual number of atoms present in a molecule of a substance is known as molecular formula. Examples: H2O2 and C6H12O6 are the molecular formulas of hydrogen peroxide and glucose respectively.
How to do Dimensional Analysis in Chemistry?
Dimensional analysis in Chemistry is often a tricky concept for students to get. Still, it is a significant one and one that you will use throughout all of your chemistry classes. Dimensional analysis is the process we use to convert a value from one unit or set of units to another. Some important questions to…
What is Relative atomic mass definition?
“The mass of one atom of an element compared with the mass of one atom of carbon taken as 12 is called relative atomic mass of the element.” Explanation: The mass of one atom of magnesium is two times the mass of one atom of carbon, therefore relative atomic mass of magnesium would be 24….
