Answer:
An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.
Answer:
when population increases the amount of carbon dioxide also increases as population use oxygen and release carbon dioxide
Zinc and Lead (II) nitrate react to form Zinc Nitrate and Lead.
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You that Mg is the metal if in the periodic table it lands between group 1-12. So yeas Mg is a metal because it lands in group 2.