C5 Transition Metals And Nanoparticles [Paper 1]

Question 1

Where are the transition metals found on the periodic table?

Answer 1

The middle

Question 2

How do the melting points of transition metals compare to those of group 1 metals?

Answer 2

Higher (transition metals)

Question 3

How do the densities of transition metals compare to those of group 1 metals?

Answer 3

Higher (transition metals)

Question 4

How do the strength of transition metals compared to those of group 1 metals?

Answer 4

Higher (transition metals)

Question 5

How does the hardness of a transition metal compared to that of our group 1 metal?

Answer 5

Higher (transition metals)

Question 6

How does the reactivity of transition metals with oxygen, halogens and water compare to that of group 1 metals?

Answer 6

Lower (transition metals)

Question 7

What are transition metals used for?

Answer 7

Catalysts

Question 8

Give the distinctive properties of transition metal compounds

Answer 8

From ions with different charges and coloured compounds

Question 9

What is the difference between the charges of transition metal ions and group 1 ions?

Answer 9

Transition metals can form different charges/group one metals can only form 1+ ions

Question 10

How big are nano particles?

Answer 10

1-100 nm

Question 11

How are nano materials different from bulk materials?

Answer 11

No materials have a much higher surface area to volume ratio

Question 12

What is the relationship between side length and surface area to volume ratio?

Answer 12

As the side length decreases by factor of 10, the surface area to volume ratio increases by factor of 10

Question 13

What are nano particles used for?

Answer 13

Used in healthcare, electronics, cosmetics, and catalysts

Question 14

How big are fine particles?

Answer 14

100-2500 nm

Question 15

How big are coarse particles?

Answer 15

2500-10,000 nm