Cadmium

Question 1

What ore is Cd found in?

Answer 1

Sulphide
CdS
Greenockite

Question 2

What is the only common ion of Cd?

Answer 2

Cd2+

- ionic

Question 3

How is Cd formed?

Answer 3

It is a by-product of smelting Zn

Question 4

Where is Cd found?

Answer 4

1. In smelting plants

2. In coal

Question 5

What form of Cd was used in batteries but isn’t really use anymore ?

Answer 5

NiCd

Nicad

Question 6

What does metallic Cd prefer to attach too?

Answer 6

Smoke particles

Question 7

What are Cd batteries being replaced with?

Answer 7

Nickle or lithium batteries

Question 8

What forms of Cd are used in pigments?

Answer 8

CdS and CdSe

-CdS is bright yellow

Question 9

How are humans exposed to Cd?

Answer 9

1. Air ( burning if the colour pigments of coal )

2. Water

Question 10

Why do plants absorb Cd2+?

Answer 10

Plants absorb Cd2+ readily because it’s the same size as Zn2+

Question 11

What food gives us the greatest exposure too Cd?

Answer 11

Potatoes
Wheat
Rice
Grains

Question 12

What kind of exposure can be attained as Cd binds sulphur rich metallothionerns?

Answer 12

Chronic

Question 13

Cadmium is _______ toxic?

Answer 13

Acutely

-LD50~ 1g