(b) The heating element is made from metal. Write down two properties of the metal so that it can be used in the heating element.
1.
[2]
2.
(c) Plastic and stainless steel are synthetic materials. What is meant by
synthetic?
[1]

Two properties of heating metal

1.high melting points.

2.malleable

What is meant by synthetic?

1.made of artificial material, not natural items, synthetic is made up of chemical synthesis. (synthetic compound, synthetic drug, synthetic material)

Explanation:

1.They are solid (with the exception of mercury, Hg, a liquid).

2 They are malleable (they can be easily hammered into very thin sheets).

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.