Which phrase describes an observational study? A. A study where the scientist changes exactly one manipulated
variable
B. A study where the scientist changes exactly one responding
variable
C. A study where the scientist does not change any manipulated
variables
D. A study where the scientist does not change any responding
variables

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

and ur welcm

: )

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

sure im new too!

explanation:

catya that's not even a b or c