Random Questions Flashcards
Anion ions are negative ions…. that have more …. than ….
Electrons than protons
Cation ions ate positive ions which means they have more …… compared to …….
protons compared to electrons
Noble gas is in group …..
It has full electrons on the ……shell
We find the structure by measuring from proton numbers
8
Outer most
Noble gases gave … valence electrons
8
Halogens are group …
7
Halogens have.. valence electrons
7
Group one are ……. with the valency of ….. in the outer most shell
Alkali metals
1
Nucleon number is the total of ……. and ……..
protons and neutrons
Nucleon number is also called …..
Mass number
Group 2 are …… metals
Alkali earth metals
Group 4 are
metalloids
Acid is due to the presence of hydrogen . hydrogen has …. proton
1
Define the relative atomic mas of elements
It is compared to carbon 12 atoms …..carbon with nuclear number which add up to 12 (protons +neutron )
Chlorine gas is … in colour
green
The name of an atom which has diatonic molecules and is a gas st room temperature and pressure
Fluorine
Hydrogen gas has the highest diffusion. Why?
Because it has the lightest relative mass
Compounds found in clean dry air
Water and carbon
Nitrogen and oxygen can be separated from liquid air .The process is called….
Fractional distillation
Nitrogen reacts with nitrogen to form ammonia in an industrial process called … .
Haber
Stat the condition used in the have process ….include units
Temperature ….
Pressure…
450 degrees Celsius
200atm
