Sodium fluoride- to brush teeth
Citric acid- orange juice for breakfast
Sodium hydroxide- cleaning agent
It is called exothermic reaction because it releases heat and light and it is called combustion reaction because it is reacting and is being oxidised by O2 to MgO.
It can also be called as oxidation reaction since Mg is oxidised to MgO.
The amount of liquid is measured in L. As the unit Lm is only used when measuring the mass liquid fraction.
D. Volcanoes formed most of them through eruption.
