Pure Substances (Grade 10 NSC Matric Physical Sciences): Flashcards

Material that does not contain a mixture

Elements and compounds

Substance that cannot be broken down chemically

Two or more elements combined in fixed ratios

Sharp, defined point at specific temperature

Only one substance appears

Atom

$H_2O$ - 2 hydrogen atoms to 1 oxygen atom

Na

$NaCl$ - 1 sodium to 1 chlorine