Questions:
1. Describe the structure of an atom and the subatomic particles from which it is made?
2. Describe the following terms and give examples for each one:-
• Element.
• Isotope.
• Atomic number.
• Atomic weight.
• Molecule.
• Mixture of elements.
3. What do you understand by the equation:-
H2SO4+NaOH→Na2SO4+H2+H2O
What is wrong with this equation?
In such a reaction what does the word stoichiometry mean?
4. Describe the chemical structures of:-
Ammonium hydroxide
3-Methylhexane
Chloroform
Give chemical names of
Fe(NO3)3
CH3CH2OH
CH3CHOCH2CH2
5. What is a macromolecule? Give at least three examples of categories of macromolecules.