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When dissolved in water, an acid or a base breaks down into

a proton and an electron.
two negative ions.
a positive and a negative ion.
a positive ion and a proton.

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.