Transition metals and nanoparticles

Question 1

Transition metals melting point

Answer 1

Relatively high

Question 1

Where can transition metals be found on periodic table

Answer 1

In the middle

Question 2

Transition metals density

Answer 2

High

Question 3

Transition metals strength and hardness

Answer 3

High

Question 4

Reactivity of transition metals with oxygen, water, halogens

Answer 4

React very slowly if at all

Question 5

What can transition metals be used as

Answer 5

Catalysts

Question 6

What happens when transition metals form a compound

Answer 6

They take on a colour

Question 7

What ions do group 1 metals form

Answer 7

+1

Question 8

What ions do group 2 metals form

Answer 8

+2

Question 9

What charged ions can transition metals form and give an example

Answer 9

Any
Copper can form + or +2

Question 10

Steps to work out SA to vol ration (5)

Answer 10

Work out SA of one face of object

Multiply by number of faces to get total SA

Calculate volume (normally length cubed)

Write a ratio

Divide total SA by vol

Question 11

Why do nanoparticules have different properties to bulk materials

Answer 11

They have a high SA to vol ratio

Question 12

Where are nanoparticles used

Answer 12

In healthcare, electronics, cosmetics, catalysts

Question 13

What is the disadvantage of nanoparticles

Answer 13

Potential to be hazardous to health and ecosystem