If an acid ionizes partially, its salt ontains ionizable hydrogen and it is acidic. If a base ionizes partially, its salt contains ionizable lydroxide and it is basic. ation reactoion Neutralization reaction: Whenever an acid and a base react together, they cancel out or neutralize each other's properties he reaction is termed as a neutralization reaction. The net product of a neutralization reaction is The hydrogen (H) from acid reacts with hydroxide ions (OHfrom bases to form water. ralization reaction is an example of a double displacement reaction. tralization Why are acids, bases and salts called electrolytes Acids, bases and salts called electrolytes: proved. Application of hermal Expression: Bimetalic Thermostat: A thermostat is a device uśed to maintain a steady temperature. Thermostat work on bimetal prinčiple. They are used to maintain temperature.of

Construction: . AIl Substances do not expand equally on heating. Let two strips of different metals for Example Brass and invar (Ni - Cr, alloy) be riveted together. On heating, the Dimetanc Dends So that the brass is on the outside of the curve because it expands, due to greater co-efficient of linear expansion. Working ​Lrical heating. circu it, the bimetallic strip works as an electric contact breakel When temperature falls the strip contracts and the contact ftBimetallic Thermometer: Bimetallic thermoemperature raises the bimetal bends and the contact in broken. The current thenciple of differential expansion. It consist of a thin bimetallic flat spiral whose end is ​temperature rises the spiral tends to bend. This causes to move the scale helps to Ple ermometer is.used to read temperature of hot regions. It works on the which moves over a scale.

EAnd other end is attached to a spindie the tempe read the temperature. Gas Laws

Boyle's Law: For the given mass Constant temperature. mass of a gas volume is inversely broportional to the pressure