Elements and Compounds

Elements and Compounds
The process which involves in breaking down the element by passing electricity through it is called
electrolysis
hydrolysis
photolysis
photosynthesis
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Elements and Compounds
The first most abundant element found in universe is
hydrogen
oxygen
nitrogen
helium
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Elements and Compounds
When magnesium element is burnt with oxygen it makes a compound called
magnesium peroxide
magnesium oxide
magnesium carbonate
magnesia
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Elements and Compounds
Sodium is found in periodic table on
left side
right side
middle
upside
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Elements and Compounds
A substance which cannot be broken into further simpler substance by any chemical reaction is called
element
compound
mixture
solution
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Elements and Compounds
The dense white fumes which can be seen upon gas ammonia are due to mixing of
hydrogen chloride
nitrogen dioxide
ammonium chloride
calcium chloride
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Elements and Compounds
Elements resting in the same group share same
physical properties
chemical properties
special properties
bonding properties
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Elements and Compounds
A molecule which breaks and gives of hydrogen and oxygen is
water
carbon dioxide
air
sodium chloride
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Elements and Compounds
Air ships and balloons use gas called
oxygen
hydrogen
helium
neon
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Elements and Compounds
Salt, sugar, chalk and sand are all
elements
compounds
mixtures
solutions
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