Answer:
1. 2Na + 2HCl = 2NaCl =H2
2. 2Mg + O2 = 2MgO
Explanation:
make sure that the number of atoms of each element is the same on each side of the equation
1. 2Na + 2HCl = 2NaCl =H2
<em><u>on LHS of equation,</u></em>
Na = 2
H = 2
Cl =2
<em><u>On RHS of equation, </u></em>
Na=2
H= 2
Cl =2
2. 2Mg + O2 = 2MgO
<em><u>on LHS of equation,</u></em>
Mg = 2
O2 = 2
<em><u>On RHS of equation, </u></em>
Mg = 2
O2 = 2
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Answer:
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Explanation:
Answer:
Charles Darwin
Explanation:
Charles Darwin is more famous than his contemporary Alfred Russel Wallace who also developed the theory of evolution by natural selection. scientist who studies living organisms.J
Answer: The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods