A chemical equation equation is a brief equation of a chemical reaction it can express a chemical reaction in a single line it can give us information about the elements or co â¦ mpounds which are reacting or decomposing it also tells us about the states of reactants and the product
an obstacle on a golf course, as a sand trap or pond; Court Tennis any of the three openings on the side (hazard side) of the court in which service is received; Origin of hazard. Middle English from Old French hasard, game of dice, adventure from uncertain or unknown; perhaps Arabic az-zahr, for Egyptian colloquial Arabic al-zahr, dice
Hazard (risk) A hazard is any biological, chemical, mechanical, environmental or physical agent that is reasonably likely to cause harm or damage to humans, other organisms, or the environment in the absence of its control.