Not necessarily right. As Polymath 257 said, there may not have been a 'before the "big bang"'. If time started at the "big bang", the phrase 'before the "big bang"' is meaningless.
Regardless of what existed or did not exist 'before the "big bang"', matter certainly existed at the time that the Earth was formed (about 9.2 billion years after the "big bang"). This matter included the hydrogen and helium that were formed during the "big bang", and the heavier elements (carbon, nitrogen, oxygen, sodium, magnesium, aluminium, silicon, phosphorus, sulphur, iron, etc.) that had been produced by nuclear reactions in stars between the "big bang" and the formation of the solar system. This is what is important, not what may have existed 9.2 billion years before the formation of the Earth.
I can only repeat my previous answer, that nobody knows whether the mass that exploded was there before the 'big bang' or whether it came into existence at the 'big bang', or whether there are other possibilities. What we are fairly sure of is that immediately after 'time zero' the universe was in the form of a 'soup' of elementary particles and that as it expanded and cooled these elementary particles 'condensed' into electrons and nuclei of hydrogen, helium and lithium. After a few hundred million years, this hydrogen and helium formed into clouds of gas that contracted and collapsed to form the first stars.
Again, I can only repeat that the first life on Earth consisted of the same chemical elements that modern living things consist of: carbon, hydrogen, oxygen, nitrogen, phosphorus, sodium, potassium, calcium, chlorine, iron, etc., and that, with the exception of hydrogen, these elements were produced by nuclear fusion reactions in stars before the Earth was formed. So far as I understand it, 'life' is not some external 'element' that has to be added to a system of organic chemicals to make it work; it is an emergent property of the chemical system.