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a positive electric charge equal in magnitude to that of an electron
what is protons protons
the ocean has more oxygen
what has the most oxygen the ocean or the crust
Nitrogen 78% , Oxygen 21% , Others 1%
what is the atmosphere made of ?
Fe is a element
is Fe element or a compound
electrons are a particle with a charge of negative electricity, found in all atoms
what is electrons
they are both the same
what has more hydrogen living organisms or the oceans
Oxygen 21%, Silicon 28%, Aluminum 18 % , Iron 5 % , calcium 3 % , others 9 %
what is the crust made of ?
NaCl is a compound
is NaCl a compound or a element
The periodic table is a chart that shows all the elements scientists have discovered.
what is the periodic table
ca is an element
is ca an element or a compound
Oxygen 85% , Hydrogen 10% , Chlorine 2% , Sodium 1% , others 2%
what is the ocean made of ?
a chemical formula is a expression of the types of and numbers of atoms in a substance
what is a chemical formula
weather the element is a , solid , gas or a liquid
what do the colors on the periodic table represent
1C 2o Co2 is an compound
is 1C 2o Co2 a compound or an element
Oxygen 65% , Hydrogen 10% , Carbon 18% , Nitrogen 3% , others 4%
what are living things
H e is a element
is H e a compound or element
because it is not a element it is a compound
why is water not on the periodic table ?
Ch4 is an compound
is Ch4 an compound or an element ?
The atmosphere has the most Nitrogen
The atmosphere has the most Nitrogen which has the most Nitrogen ?
Cu is an element
Cu is a element true or false