Transition metals Flashcards
(18 cards)
What is an isotope?
Atoms of the same element with the same number of protons but different number of neutrons in the nucleus.
What is an ion?
A charged particle, formed when atoms gain or loose electrons to form a full outer shell.
What are the properties of metals?
Good conductors of heat and electricity, they are malleable, strong, and have high melting and boiling points.
What are the properties for transition metals?
-They mostly have the same properties as a normal metal, however they can form more than one ion, many forming colored compounds.
-Transition metals make very good catalysts. e.g The Haber process
- They react with chlorine to make metal chlorides and react with oxygen to form metal oxides.
What are some elements that are in the transition metals?
Copper, silver, iron, gold, chromium, titanium, platinum, zinc and nickel.
What is chromium used for and why?
Playing on cars, because it does not corrode or rust.
What is Magnease compounds used for and why?
To make panels for stained glass windows, because it forms colored compounds.
Iron used for and why?
In the Huber process to make ammonia because it is a efficient catalyst .
Cobalt used for and why?
Aircraft engines because it is hard, can withstand high temps and does not get worn away.
Nickel used for and why?
To make coins because it is a hard metal.
Copper used for and why?
To make water pipes and electrical wires because it is unreactive and a good conductor of electricity.
What is the Huber process?
Hydrogen and Nitrogen. (3Hsmall2 plus Nsmall2 = 2NHsmall3 ( ammonia) )
What is ammonia used for?
To make fertilizers.
Do metal atoms create positive ions or negative ions?
Positive
Do non metal atoms creat positive ions or negative ions?
Negative
Where are transition elements located?
Between group 2 and 3, in the centre of the periodic table.
What is the difference between Transition metals and group 1 elements?
-Group 1 metals are much more reactive then transition metals.
-Group 1 metals react more vigorously with water, oxygen or group 7 elements.
-Group 1 metals have lower melting points
-Group 1 metals are less dese, strong and hard than the transition metals.
What is an example of Group 1 metals having lower melting points
-Manganese melts at 2000 degrees celcius wheras sodium melts at 98 degrees celcius.
