What types of matter consist of particles that are highly organized?

Scientist wants to react a barium chloride salt with an acid. to speed up the reaction, the scientist crushes the barium chloride salt until it is a fine powder. this speeds up the reaction by a. increasing the ph of the salt. b. increasing the surface area of the salt. c. increasing the pressure of the salt. d. increasing the temperature of the salt. im thinking more a not 100% sure

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

What is a metal replacement reaction