Which of the following is a method for separating a mixture a) using paper chromatography to separate pigments by density b) using decanting to pour liquid off a solid c) using electrolysis to separate oxygen and hydrogen from water molecules d) a and b e) all of the above

What was bohr’s contribution to the planetary model

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space

One similarity and one difference between an element and a mixture of elements