Atomic Structure and Properties

Flashcards covering the key concepts related to atomic structure, including definitions of particles and properties.

Nucleus

The central part of the atom that contains protons and neutrons.

Proton

A positively charged particle found in the nucleus of an atom.

Neutron

A neutral particle found in the nucleus of an atom.

Electron

A negatively charged particle that moves around the nucleus in electron shells.

Relative Mass of Proton

1

Charge of Proton

+1

Relative Mass of Neutron

1

Charge of Neutron

0

Relative Mass of Electron

Very small (often considered as zero).

Charge of Electron

-1

Volume of Electron Orbits

Determines the size of the atom.

Mass Concentration in Nucleus

Almost the entire mass of the atom is concentrated in the nucleus.

Standard Form

A way of expressing very large or very small numbers, such as 1 x 10^-14 m for the nucleus radius.

How to calculate relative atomic mass (Ar)

Who made the plum pudding model

JJ Thompson

What did Rutherford do

The alpha particle scattering experiment

What did they do in the alpha particle experiment

Fired positively charged alpha particles at an extremely thin sheet of gold

What model did Bohr make

The nuclear model that showed us that electrons were contained in shells

How do u calculate mr

Add up the Ar(relative atomic mass) of each element in the formula

What is the formula triangle

M.E.P.B

methane = c1 ethane=c2 propane=c3 butane=c4

Alkane general formula

CnH2n+2

The shorter the hydrocarbon chain

The more runny , less viscous