Fun with Chemistry

  Hello! Welcome to my blog. Today we will discuss about chemical species. lets start. If one  molecule  is identical to another, we can say they are the same chemical species. Ion: It is an atom or group of atoms having a charge on it. The charge may be positive or negative.  There are two types of ions:       Cations: An atom or group of atoms having positive charge on it is called cation. They are formed when atoms lose electron from their valance shells. Examples:   Ca 2+   Ag +    Al 3+     H 3 O +     NH 4 +     Hg 2 +2      Fe +2     Fe  +3        Anions: An atom or group of atoms having negative charge on it is called anion. They are formed by gain or addition of electron to an atom. Examples: Cl –    OH –      I –     Cr 2 O 7 -2     O -2      SO 4 -2 Molecular Ion: When a molecule loses or gain electron it forms a molecular ion. Free Radical: These are atoms or groups of atoms possessing odd number of unpaired electrons. It is represented by putting a dot over the symbol of a

 Hello!  How are you all?  Today we will discuss molecular mass and formula mass.  Molecular Mass: The sum of atomic masses of all the atoms present in one molecule of a molecular substance, is it's molecular mass.  For example: molecular mass of water is 18 amu, chlorine is 71 amu and carbon dioxide is 44 amu.  Formula Mass: The sum of atomic masses of all the atoms present in one formula unit of a substance.  For example: formula mass of sodium chloride is 58.5 amu and that of CaCO3 is 100 amu.  So this was the short introduction of basic terms. See you soon. Stay tuned. 

 Hello Everyone!  Today we will discuss chemical formula. Let's start.  Chemical formulas are of two types: 1-Emperical Formula 2-Molecular Formula Empirical Formula: It is defined as the formula that shows the ratio of elements present in a compound, but not the actual numbers of atoms found in the molecule. It is also known as simple formula in chemistry.  Molecular Formula: It gives the total number of atoms of each element in each molecule of a substance.  This was the short intro of the basic terms.  Hope you get clear. 

 Hello readers! Hope you will be fine. Our today's topic is relative atomic mass. let's start! It is the average mass of the atoms of that element as compared to1/12th the mass of an atom of carbon-12 isotope. Based on carbon-12 as a standard, the mass of an atom of carbon is 12 units and 1/12th of it comes to be 1 unit. When we compare atomic masses of other elements with atomic masses of carbon-12 atom, they are expressed as relative atomic masses of those elements. The unit of relative atomic mass unit is amu (Atomic mass unit). One atomic mass unit is 1/12th the mass of one atom of carbon-12.  This was the short intro of Relative atomic mass.  See you next with another topic. Thank you!

 Hello My dear Readers!  Hopefully you all are fine and also doing experiments in your life. Let's start our today's topic. Today we will discuss atomic number and mass number.  Atomic number: The number of protons present in the nucleus of its atom is called atomic number. Atomic number is represented by 'Z'. All the atoms of an element have same number of protons in their nuclei so thay have same atomic number. Each individual element has specific atomic number that is called identification number. For example hydrogen have 1 proton so it's atomic number is Z=1. In oxygen all atoms have 8 protons, have atomic number Z=8 .  Mass number: It is the sum of number of protons and number of neutrons present in the nucleus of an atom. It is represented by 'A'.  It is calculated as:         A=Z+n Where n is number of neutrons.  For example: hydrogen atom has on proton and no neutron in its nucleus, its mass number A = 1 + 0 = 1 . Carbon atom has protons and 6 neut

 Hello everyone!  Today we will dicuss classification of matter.  A piece of matter in pure form is called a Substance. While impure matter is called Mixture.  Further Substance is divided into element and compound. Similarly, Mixtures are of two types homogenous mixture and heterogeneous mixture.  Substance: Element: According to modern definition of element "it is a substance made up of same types of atoms, having same atomic number and cannot be decomposed into simple substance by ordinary chemical means. It means that each element is made up of unique type of atoms that have very specific properties.  Elements occur in free state as well as in combined state. They may be solid, liquid or gas.  Compound: It is a substance made up of two or more elements chemically combined together in fix ratio by mass. As a result of this elements lose their own properties and produce new substances that have different properties Mixture: Homogenous mixture: Mixture that have uniform com

 Hello!  How are you all? Today our topic is Atom.  We all heard about atom.  The smallest particle of an element is called atom. Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made of atom.  An atom is a particular of matter that uniquely defines a chemical element. An atom consist of a central nucleus that is surrounded by one or more relatively heavy particles known as proton and neutron.    This was the short introduction of atom. Next we will discuss structure of atom.  Structure of Atom: The total mass of an atom, including the protons, neutrons and electrons, is the atomic mass or atomic weight. The atomic mass or weight is measured in atomic mass units. Electrons contribute only a tiny part to the mass of the atomic structure, however, they play an important role in the chemical reactions that create molecules. The atomic weight can be thought of as the number of protons plus the number of neutrons. Because the number of ne