3 ejemplos de medios generales con descripcion

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)