Which of the following statements is a part of john dalton’s atomic theory? every compound is composed of atoms of a single element. all atoms of all elements are exactly alike and have the same mass. all elements are composed of atoms that cannot be divided. electrons move in specific orbits around the nucleus of an atom.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

Why do lunar and solar eclipse not happen every month