This is the seventh of the twenty-four consonant sounds in our British English phonetic chart.
A consonant is a basic speech sound in which the breath is at least partially obstructed and which can be combined with a vowel to form a syllable.
This consonant sound is found in words like key /ki:/, coffee /kɒfi:/, cheque /ʧek/.
This is one of the consonants (p, b, t, d, k, m, n, l, r, f, v, z, h, w) where the symbol matches the letter of the alphabet and has its usual English sound value.
This consonant sound is unvoiced. It is known as a plosive. Plosives have a sudden release of trapped air. In this case the air is trapped behind the back of the tongue and the top of the mouth, palate, before being released. Its voiced counterpart is /g/.