CHEM-1405 Atoms and Elements: Lecture Review

Flashcards for CHEM-1405 Atoms and Elements lecture, covering atomic theory, nuclear theory, and element symbols.

Atom

The smallest identifiable unit of an element.

Element

A substance that cannot be broken down into simpler substances.

Atoms

An element is composed of tiny, indivisible, indestructible particles called…

Compounds

Atoms of different elements combine to form…

Compounds

Contains atoms in small whole number ratios.

Rutherford's major conclusions from the a-particle scattering experiment

The atom is mostly empty space, and it contains a very small, dense center.

Nucleus

A very small, dense center containing protons.

Electrically neutral

The number of negatively charged electrons outside the nucleus is equal to the number of positively charged particles (protons) inside the nucleus, so that the atom is…

Symbol for Lead

Pb

Latin name for Lead

Plumbum

Symbol for Mercury

Hg

Symbol for Gold

Au

Symbol for Tin

Sn

Symbol for Copper

Cu

Symbol for Tungsten

W

Symbol for Sodium

Na

Symbol for Potassium

K