J. J. Thomson's plum pudding model was based on all BUT one of these beliefs. That is A)
all atoms are neutral.
B)
an atom has positive and negative charges.
C).
negative charges balance positive charges
D)
positive charges are embedded in a negative sphere.

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

Compare and contrast physical changes with chemical changes.

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.