Answer:burning of fossil fuels and the decrease of oxygen and the increase of carbon dioxide
Explanation:
<span>Bonds of reactants are broken and create new bonds to form different products and produces exothermic and endothermic reactions.
You are able to see a chemical reaction occur through a few signs
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The answer is most likely nonmetals. :)
Atoms have no electric charge because the protons and electrons "cancel out" each others charges. Neutrons have no charge. What is the atomic number of an element? The atomic number is the number of protons in the atom's nucleus.
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The 3 indicates the third electron shell. (Which has only 1 electron in it in this configuration)
Hope this helps! :)