Elements and Compounds

Elements and Compounds
When iron and sulphur are mixed together at room temperature there is lack of
reaction
production of new product
mixed reaction
both a and b
Author: rikazzz Comment
Elements and Compounds
A ductile element which is a good conductor of electricity is called
copper
rubber
glass
sand
Author: rikazzz Comment
Elements and Compounds
The formation of compounds involve
chemical reaction
physical reaction
evaporation
distillation
Author: rikazzz Comment
Elements and Compounds
Metals are good conductors of heat and electricity. They have high
densities
melting point
boiling point
all of them
Author: rikazzz Comment
Elements and Compounds
Solid ‘carbon dioxide’ crystals make
fizzy drinks
dry ice
airships fly
balloons risen
Author: rikazzz Comment
Elements and Compounds
Carbon, hydrogen and oxygen combine together to make
sugar
polythene
chalk
common salt
Author: rikazzz Comment
Elements and Compounds
Stars are made up of two most abundant elements in universe namely
hydrogen and helium
oxygen and hydrogen
hydrogen and carbon dioxide
nitrogen and oxygen
Author: rikazzz Comment
Elements and Compounds
Heating, exposing to light or passing electricity will only let to decompose
element
compound
mixture
liquid
Author: rikazzz Comment
Elements and Compounds
Chinese thought that the number of elements were
3
4
2
5
Author: rikazzz Comment
Elements and Compounds
In a periodic table, the row of elements is called
sets
group
column
periods
Author: rikazzz Comment

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