Elements and Compounds

Elements and Compounds
The number of natural elements is
116
92
140
98
Author: rikazzz Comment
Elements and Compounds
Due to temperature sensitivity the element which is filled in thermometer, is
mercury
copper
helium
oxygen
Author: rikazzz Comment
Elements and Compounds
A compound which yields in black solid, copper oxide and colorless gas carbon dioxide on heating, is
copper carbonate
iron sulfide
sodium chloride
copper chloride
Author: rikazzz Comment
Elements and Compounds
The building blocks of all matter including living and non living things are
element
compound
mixture
solution
Author: rikazzz Comment
Elements and Compounds
A greenish yellow poisonous gas is
chlorine
carbon dioxide
nitrogen
helium
Author: rikazzz Comment
Elements and Compounds
Helium is considered to be the abundantly found gas, ranking in number
1
2
3
4
Author: rikazzz Comment
Elements and Compounds
If 1g of hydrogen is mixed with 8g of oxygen, the produced water will be
9g
7g
8g
1g
Author: rikazzz Comment
Elements and Compounds
A chemical reaction can be explained and presented in the form of
chemical symbol
chemical formula
chemical properties
word equation
Author: rikazzz Comment
Elements and Compounds
The general properties of metals are
shiny
ductile
malleable
all of above
Author: rikazzz Comment
Elements and Compounds
All elements possess different
physical properties
chemical properties
special properties
both a and b
Author: rikazzz Comment

Go to Page