Two chemical reactions are shown: 2Mg + O2 → 2MgO
CaCO3 → CaO + CO2

Which statement is true?
Both are synthesis reactions.
Both are decomposition reactions.
A is a synthesis reaction, and B is a decomposition reaction.
A is a decomposition reaction, and B is a synthesis reaction.

100%sorry if i’m wronghope this good luck: )

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom