The first chapter of standard 10 of science book. we deal with terms and topics regarding this chapter.
Are you guys ready to think and explore?
science means to know.... know and think about the phenomena
A chemical reaction has taken place, Whenever a chemical change occurs. Remember you things when to determine about chemical reaction
1) change in state
2) change in colour
3) evolution of a gas
4) change in temperature
if you find the or anyone of them, consider that freely a chemical reaction
Law of conservation of mass-; mass can neither be created nor destroyed in a chemical reaction.
i.e, the number of atoms of each element remains the same, before and after a chemical reaction.
now, when we talk about chemical reaction and equation. firstly, what is an equation?
so, A word-equation shows the change of reactants to products through an arrow placed between them. ex
Mg + O2 → MgO
