1. Why are ionic solids poor conductors of electricity? The ions are neutral. O The lattice is brittle. O The ions are of equal but opposite charge. O The ions are in fixed positions.​

Respuesta: Es una red gigante de iones con carga opuesta.

Explicación:

El compuesto iónico se forma por transferencia de electrones. Para la formación de un compuesto iónico neutro, el catión se forma por la pérdida de electrones por los metales y los aniones se forman por la ganancia de electrones por los no metales. Los cationes y aniones con carga opuesta se atraen entre sí a través de fuertes fuerzas colúmbicas y forman un enlace iónico.

Los cationes y aniones están dispuestos en una celda unitaria y hay muchas celdas unitarias dispuestas juntas para formar una red regular. Por lo tanto, son de naturaleza dura y cristalina.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: