Sodium and chlorine react vigorously when heated, giving an orange flame and clouds of white sodium chloride. Damp litmus paper is bleached white when it is placed in chlorine. If damp-blue litmus ...

AIM-listed MSP Redcentric has acquired cybersecurity firm 7 Elements Limited for a sum of up to £2.4m. Edinburgh-based 7 Elements provides security testing, incident response management and bespoke ...