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Worksheetselements
Total questions: 15
Worksheet time: 14mins
what are the elements present in water
nitrogen,hydrogen
carbon dioxide,oxygen
ammonia,hydrogen
oxygen,hydrogen
which are monoatomic elements??
oxygen(O)
sulphur((S8)
carbon(C)
phosphorus(P4)
neon(Ne)
how many elements are there???
(a)
what are the elements used in our life??
oxygen
gold
neon
silver
argon
write elements that exist indepently???(one enough).
(a)
how can be elements divided???chemically or physically
(a)
what does elements combine to form???
atoms
moleclues
compounds
mixtures
what is the meaning of elements
smallest particle of an thing
may not exist independently
are in a fixed proportion
are made up only one kind of atoms
how many elements occured in nature???
(a)
how many elements are made in laboratories by scientists???
(a)
how can be water divided into hydrogen and oxygen
(a)
elements was found by???
(a)
how can be elements represented in short form
(a)
which is the oldest element in the world???
(a)
which is the newest element in the world???
(a)
