Transition Metals And Nanoparticles

Question 1

Where are transition metals found in the periodic table

Answer 1

The middle block

Question 2

Compare the melting points of the transition metals with those of group one metals

Answer 2

Transition metals have higher melting points

Question 3

Compare the hardness of the transition metals with that of group one metals

Answer 3

Transition metals are harder to

Question 4

Compare the densities of the transition metals with those of group one metals

Answer 4

Transition have higher densities

Question 5

Compare the reactivities of the transition metals with those of group one metals

Answer 5

Transition metals have lower reactivities

Question 6

What are transition metals used for

Answer 6

Building things and catalysts

Question 7

Two distinctive properties of transition metals

Answer 7

They form colored compounds, and have more than one possible charge on their ions eg fe2plhs and fe3plus

Question 8

How big are nano particles

Answer 8

1-100nm

Question 9

Why are nano particles different to bulk materials

Answer 9

They have a massive surface area to volume ratio

Question 10

What are nano particles used for

Answer 10

Healthcare, electronics, cosmetics, and catalysts

Question 11

How big are fine particles

Answer 11

100-2500nm (2.5 ħm)

Question 12

How big are course particles

Answer 12

2.5-10ħm