Question

MULTIPLE CHOICE PLZ HELP!!!!!!
What one factor identifies an atom as a specific element?

the number of protons.
the atomic mass.
the number of neutrons.
the mass number.


An atom of fluorine has an atomic number of 9 and an atomic mass of 19. The atom contains

19 protons, 19 electrons, and 9 neutrons.
19 protons, 10 electrons, and 9 neutrons.
9 protons, 10 electrons, and 10 neutrons.
9 protons, 9 electrons, and 10 neutrons


Experiments with cathode ray tubes led to a new model of the atom, sometimes called the "plum pudding" model, because of the discovery of the

electron.
nucleus neutron.
proton.

Answer 1

the last one

Answer 2

cathode ray tube led to the discovery of the electron, i think the plum pudding model was imposed to explain how the nucleus existed

Answer 3

uh sry they are seperate questions ;D

Answer 4

My first comment answers your first question and the second one to your second one.

Answer 5

thanks ;D

Answer 6

no problem. relatively easy questions. Also if you want more speedy answers most of the answers are listed on google.

Answer 7

oh ;D haha thx agin!!