C5 - Transition metals and Nanoparticles (PAPER 1) Flashcards
Where are transition metals found on the periodic table
the middle
How do the melting points of Transition Metals compare to those of Group 1 metals?
higher (Transition metals)
How do the densities of Transition Metals compare to those of Group 1 metals?
higher (Transition metals)
How do the strengths of Transition Metals compare to those of Group 1 metals?
higher (Transition metals)
How does the hardness of a Transition Metal compare to that of a Group 1 metal?
higher (Transition metal)
How does the reactivity of Transition metals with oxygen, halogens and water compare to that of Group 1 metals
lower (Transition metals)
What are transition metals used for
catalysts
Give the distinctive properties of transition metal compounds
form ions with different charges and coloured compounds
What is the difference between the charges of Transition Metal ions and Group 1 ions
- Transition metals can form different charges
- Group 1 metals can only form 1+ ions
How big are nanoparticles
1 - 100 nm
How are nanomaterials different from bulk materials
nanomaterials have a much higher surface area to volume ratio
What is the relationship between side length and surface area-to-volume ratio
as side length decreases by a factor of 10, the surface area-to-volume ratio increases by a factor of 10
What are nanoparticles used for
healthcare, electronics, cosmetics, catalysts
How big are fine particles
100-2500nm
How big are coarse particles
2.5 to 10µm (2.5x10^-6 to 1x10^-5)m
