Determine whether each statement is true $(T)$ or false $(F).$

$T$ or $F$ An ion is a charged particle formed when a neutral atom or molecule gains or loses

one or more electrons.

$T$ or $F$ An anion is an ion with a net positive charge.

T or $F,pH$ is a scale used to express the degree of acidity in a solution.

$T$ or $F$ Ions exist in solution and are indicated in the chemical equation as aq to represent

that they are dissolved in water $($aqueous$).$

$T$ or $F$ When red litmus paper turns blue. the substance being tested is acidic.

T or $F$ A volatile substance is one that easily evaporates at normal temperatures.