Explain three states and change in states for matter.
Matter normally exists in three states: solid, liquid, and gas.
A transition from one of these states to another is called a change of state.
Two common changes of states are solid to liquid and liquid to gas (and vice versa).
These changes can occur when the exchange of heat takes place between the substance and its surroundings.
A closed bottle containing water at $30°C$ is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened
What are the states of matter ? Which ?
Fire is extinguished more effectively by
Which of the substances $A, B$ or $C$ has the highest specific heat $?$ The temperature vs time graph is shown
What are vapourization and boiling point ? Explain the process of boiling of water.