the specific heat capacity is the energy needed to raise the temperature of 1kg of that substance by 1 degree
Answer: (3) silicon
Explanation:
Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Silicon (Si)
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: ethane
, propanone
and water 
I think it's oxide and halide
I will, I am in a chemistry class right now. What’s up?
The correct definition of density is the degree of compactness of a substance.