Me ayudan xfa, doy corona :) 1) ¿Qué es un modelo atómico?
2) ¿A qué se llama número atómico y número másico?
3) ¿A qué se llama elemento?
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What three things determine the shape and size of a puddle when water is poured out onto a surface

All forces cause motion? true or false

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.