arsenic

Everyday

1. Arsenic is a chemical element (symbol As); many of its compounds are very poisonous. tree →
2. In history and crime stories, arsenic was a famous poison. tree →

In the lessons

In science lessons it is an element in the periodic table. In history it was used in wallpaper, medicines and pest killers, and in old mystery stories as poison. Phrases: arsenic poisoning, traces of arsenic.

Examples

• Arsenic is a poisonous element. tree →
• The Victorians used arsenic in green wallpaper. tree →
• Water in some countries has dangerous arsenic in it. tree →
• Arsenic's chemical symbol is As. tree →
• The detective suspected arsenic poisoning. tree →
• Rice can contain tiny amounts of arsenic from soil. tree →

Note

Uncountable. Said AR-se-nik. Safety: never touch or taste unknown chemicals.