Golden Rain

Does the water have to be hot?

• Yes

• No

• Yes

• Both correct

What reaction is it?

• Double Replacement

• Single Replacement

• Combustion

• Synthesis

What is the first step before starting the expirement

• Goggles on

• Apron On

• Hair tied up

• All correct

Second step before experiment?

• Goggles on

• Hair Tied Up

• Apron on

• Both correct

What is the third step before starting experiments?

• Apron on

• Goggles on

• Hair tied up

• All correct

Pb(N03)2 + Kl → PbI2 +_ KNO3 balanced reaction?

• 1,2,1,2

• 1,2,2,2

• 1,3,2,4

• 1,1,3,2

K = 39/165 x 100% =

     

• 23%

• 19%

• 20%

• 30%

I = 127/165 x 100% =

      

• 23%

• 35%

• 77%

• 40%

what is Lead atomic number?

• 82

• 85

• 80

• 90

What is Iodine's atomic number?

• 81

• 54

• 53

• 60