Atomic Structure & the Periodic Table

Flashcards covering atomic structure, the periodic table, metals, non-metals, electronic structure, and group properties.

Atoms of the same element with the same number of protons and electrons but different numbers of neutrons.

Isotopes

Ions are formed when an atom gains or loses an electron

Ions

Elements that are generally shiny, good conductors of heat and electricity, and malleable.

Metals

Elements that are generally dull, poor conductors of heat and electricity, and brittle.

Non-metals

Group 1 elements; very reactive metals with 1 electron in their outer shell.

Alkali Metals

Group 7 elements; reactive non-metals with 7 electrons in their outer shell.

Halogens

A reaction where a more reactive halogen displaces a less reactive halogen from its compound.

Displacement Reaction

A substance that kills bacteria and is safe to use on the skin.

Antiseptic

A substance that kills bacteria but is too strong to use on the skin.

Disinfectant

Test used to identify the presence of metal ions in a compound based on the color of the flame produced when heated.

Flame Test

If silver nitrate solution is added to a sample of water containing halide ions the silver halide is precipitated.

Silver nitrate solution

Group 0 elements; unreactive gases with a full outer electron shell.

Noble Gases

Test for hydrogen gas, ignites with a distinctive 'squeaky pop' sound.

Identifying hydrogen gas