Atomic Structure Review | Baamboozle - Baamboozle

English 9 Public

Chemistry

Study Slideshow

Where is the mass of an atom concentrated?

In the nucleus

What is the overall charge of an atom?

What are isotopes?

Elements with the same number of protons but different number of neutrons

What happened in the alpha-scattering experiment?

Alpha particles were shot at a piece of gold foil. Most of the alpha particles went through the gold foil, some deflected and some bounced back.

What did the results of the alpha-scattering experiment indicate?

Atoms are mostly empty space, most of the atom's mass is concentrated in the centre.

What did Niel Bohr discover about electrons?

They orbit the nucleus in shells.

Describe the plum pudding model of the atom

A cloud of positive charge with electrons dotted about

Describe the structure of an atom

Negatively-charged electrons in shells orbiting a nucleus made of positively-charged protons and neutral neutrons.

Why did Mendeleev leave gaps in his periodic table?

He predicted that there were elements that existed that had not yet been discovered. He also predicted their mass and properties.