common elements

A hazard is a danger associated with a substance

An element that shares some properties with metals and some properties with non metals is called a metalloid

Hazard symbols are used to tell us in what way, or how, a substance is dangerous

Symbols are useful because:

They allow people of any language to communicate to each other

Corrosive hazard symbol:

. Could damage your skin

. Can be found on the back of cleaning products

Moderate hazard symbol

. Allows people of any language language to communicate hazards to each other

Flammable/enviormental hazard

. Moderate hazard

. Flammable and can be set on fire when exposed to heat