Question

Only 2 questions PLEASE HELP ME

1. Which reaction substitutes one element in a reactant with another to form a product?

single-displacement

combustion

synthesis

double-displacement



2.Which choice correctly describes the subatomic particles in the isotope 28Mg?

28 protons, 12 electrons, 28 neutrons

12 protons, 12 electrons, 16 neutrons

12 protons, 12 electrons, 12 neutrons

12 protons, 16 electrons, 28 neutrons

Answer 1

Single Replacement occurs when a single element reacts with an ionic compound and switches places with one of the elements in the compound. When you write the reaction you start with an element and compound and get an element and compound.
A+BC—>B+AC