Names and Formulae of Substances (Grade 10 NSC Matric Physical Sciences): Flashcards

Chemical names and chemical formulae

Positive ions formed when atoms lose electrons

Negative ions formed when atoms gain electrons

Element on left of periodic table written first

Two (2)

Three (3)

Roman numerals for metals; prefixes for non-metals

Total positive charge must equal total negative charge

$H_2O$

$NH_3$