posted by Amy on .
1. An isotope is an atom of an element that varies in mass number due to variation in the number of:
is it C
2, A covalent bond is:
A. the attraction that one atom has for another atom.
B. the attraction between two atoms, formed by the sharing of electrons.
C. formed between the positive charge of a hydrogen atom in one molecule and the negative charge of a nitrogen atom in another nearby molecule.
D. the attraction between a positive ion and a negative ion.
is it A
3. Solutions are always comprised of:
A. solvents and solute.
B. liquids and solids.
C. water and salts.
D. compounds and ions.
is it A
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.
See later post.