What is the lightest element in the periodic table?
Helium, my dude!
What is the heaviest element in the periodic table?
Uranium, my dude
What is the most electropositive element on the periodic table?
Cesium
The octane number of zero is assigned to?
n-heptane
The major constituent of air is
nitrogen
|
Henry's law
|
Acetophenone
Alloys are mixtures containing at least one metal. We use metals for many jobs in our technological world and sometimes a metallic element just won't cut it.
What is the most common isotope of hydrogen?
protium
|
4
The metal that is usually extracted from sea water is? |
magnesium
what are atoms?
An atom is the smallest recognised division of a chemical element and is made up of three particles: the proton, neutron and electron.
What is the most electronegative element on the periodic table?
flourine
|
levigation
|
0.5 mole
The most abundant rare gas in the atmosphere is?
Argon
|
P4
what is an acid?
acid is any substance that has pH of less than 7
The mass of one Avogadro number of helium atom is?
4 gram
|
thermoset