MOLECULES AND ATOMICITY
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that… Read More »MOLECULES AND ATOMICITY
Chemistry
MIXTURES AND SEPERATION TECHNIQUES
ELEMENTS Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the… Read More »MIXTURES AND SEPERATION TECHNIQUES
OXIDATION NUMBERS
It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an… Read More »OXIDATION NUMBERS
COMPOUND
In chemistry, a compound is a substance that results from a combination of two or more different chemical element s, in such a way that the atom s of the… Read More »COMPOUND
RELATIVE ATOMIC MASSES OF ELEMENTS
ISOTOPE Isotopes Definition: Isotopes are atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms of a single element. Examples: Carbon 12 and Carbon… Read More »RELATIVE ATOMIC MASSES OF ELEMENTS
PARTICULATE NATURE OF MATTER
Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than… Read More »PARTICULATE NATURE OF MATTER
MOLECULES AND ATOMICITY
A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that… Read More »MOLECULES AND ATOMICITY
ELEMENTS
Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the first… Read More »ELEMENTS
PARTICULATE NATURE OF MATTER
In our daily life, we come across many objects, the knowledge about which can be gained by one or more of our senses like sight, touch, hearing, taste and smelling.… Read More »PARTICULATE NATURE OF MATTER
Chemistry as a Subject
Chemistry as a Subject and as a Central Science CHEMISTRY AS A DISCIPLINE Human mind has always been very curious to make investigations and know about various activities/phenomena occurring around… Read More »Chemistry as a Subject
STRUCTURE OF THE ATOM
ORBITALS OF THE ATOM The region in space within which there is maximum possibility of finding an electron in an atom is called an ATOMIC ORBITAL. We have s, p,… Read More »STRUCTURE OF THE ATOM
ATOMIC NUMBER, RELATIVE ATOMIC MASSES, ISOTOPES AND CALCULATIONS
CONSTITUENTS OF AN ATOM Atoms are made up of sub-particles. Protons, electrons and neutrons. Proton has a positive charge, electron has a negative charge and neutron has no charge. … Read More »ATOMIC NUMBER, RELATIVE ATOMIC MASSES, ISOTOPES AND CALCULATIONS
NOMENCLATURE OF CHEMICAL COMPOUNDS
NAMING OF BINARY COMPOUNDS Nomenclature: This is the system of naming chemical compounds. The system is called IUPAC (International union of pure and applied chemistry). The naming is determined by… Read More »NOMENCLATURE OF CHEMICAL COMPOUNDS
PARTICULATE NATURE OF MATTER
ATOMS AND MOLECULES Matter is made up of discrete particles. The main ones are atoms, molecules, and ions. An atom is the smallest part of an element which can take… Read More »PARTICULATE NATURE OF MATTER
STANDARD SEPARATION TECHNIQUES
STANDARD SEPARATION TECHNIQUES The importance of separating a mixture into its constituents cannot be over emphasized since most substances are needed in their pure form. There are many standard separation… Read More »STANDARD SEPARATION TECHNIQUES
COMPOUNDS AND MIXTURES
COMPOUND A Compound is a substance which contains two or more elements chemically combined together. A compound is formed as a result of chemical change. Examples of compounds are Compound … Read More »COMPOUNDS AND MIXTURES
ELEMENTS, SYMBOLS & VALENCY
ELEMENTS AND SYMBOLS An element is a substance which cannot be split into simpler units by ordinary chemical process. There are over one hundred known elements. SYMBOLS OF ELEMENTS… Read More »ELEMENTS, SYMBOLS & VALENCY
NATURE OF MATTER
Matter is anything that has weight and occupies space. It exists in three states namely: solid, liquid and gas. The fundamental difference between the three states of matter depends on… Read More »NATURE OF MATTER
LABORATORY FAMILIARIZATION
DEFINITION OF LABORATORY A laboratory is a room or building equipped for scientific experimentation or research. It is a special facility where experiments are done and typically contains scientific equipment… Read More »LABORATORY FAMILIARIZATION
INTRODUCTION TO CHEMISTRY
CHEMISTRY AS A SCIENCE SUBJECT Science is an organized body of knowledge gathered through systematic experimentations and philosophical observations. Chemistry can be defined as a branch of science which deals… Read More »INTRODUCTION TO CHEMISTRY