B. Most species that have lived on earth are now extinct. Ap3x
D. Synthesis cause A + B --> AB
Equation: 2Na + Cl2 --> 2NaCl
1 mole is equal to 1 moles NaOH, or 39.99711 grams.
Hope this helped
Answer:
When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion