Importance of pH in Everyday Life
Are plants and animals pH sensitive?
Our body works within the pH range of 7.0 to 7.8. Living organisms can survive only in a narrow...
Salt in Daily Life
Common salt — A raw material for chemicals:
The common salt thus obtained is an important raw material for various materials of daily use, such...
Chemical Properties of Acids and Bases
Acids and Bases in the Laboratory:
Litmus Paper Test:
Acid converts blue litmus paper to red in color.
Bases convert red litmus paper...
Chemical Properties of Metals and Non-metals
Comparison of Chemical Properties of Metals and Non-metals:
Property
Metals
Non-metals
Reaction with Oxygen
Metal + Oxygen → Metal oxide
4Na(s) + O2(g) → 2Na2O(s)
4Al(s) + 3O2(g) → 2Al2O3
Metals form basic...
Hydrocarbons
Hydrocarbons
The compounds which are majorly made of hydrogen and carbon atoms. Hydrocarbons are further classified as
Saturated compounds
...
Control and Coordination in Animals and Plants
Living organisms respond to various stimuli like heat, light, cold, touch, pressure etc. Example: Withdrawal of hand on touching a hot object.
Control and Coordination...
Acid, Base and Salt Definition
Acid:
An acid is a substance that donates hydrogen (H+) ions. When an acid is dissolved in water, the balance between hydrogen ions and hydroxide...
Oxidation And Reduction In Nature- Corrosion & Rancidity
There are many natural phenomenon which based on chemical reactions. Here we describe two phenomenons based on oxidation and reduction reaction.
Corrosion:
Corrosion is a natural...
Physical Properties of Metal & Non-metal
Elements are classified broadly into two categories on the basis of properties:
Metals: Iron, Zinc, Copper, Aluminium etc.
Non – metals: Chlorine, Nitrogen, Hydrogen, Oxygen, Sulphur...
Magnetic field due to Current Carrying Conductor
Magnetic field due to Current Carrying Conductor
The above electric circuit in which a copper wire is placed parallel to a compass needle, shows the...