Finally sinking my teeth into Dewey...

I am finding it all a bit confusing at the moment... I have realised that I need to complete the exercises, and as I didn't get the book early enough, or print versions of Dewey, I need to use Abridged WebDewey with the Abridge version exercises. I am using the summaries I found on the OCLC website to work out the answers so far. Have tried to do a couple of things with WebDewey, but so far I am finding it confusing... Will keep persevering though! 

Exercise 1: The summaries
Use the second and third summaries to select appropriate numbers for the following
topics:
1. Music - 700: Arts and recreation, 780: Music
2. Law - 300: Social sciences, 340: Law
3. Spanish literature - 800: Literature, 860: Spanish & Portuguese literatures
4. Psychology - 100: Philosophy & psychology, 150: Psychology
5. Roman Catholic Church - 200: Religion, 280: Christian denominations, 282: Roman Catholic Church
6. Biochemistry - 500: Science, 570: Life sciences; biology, 572: Biochemistry
7. Death customs - 300: Social Sciences, 390: Customs, etiquette & folklore, 393: Death customs
8. Chamber music - 700: Arts & recreation, 780: Music, 785: Ensembles with one instrument per part (I had to look up chamber music on Wikipedia to confirm that it fitted with this...)
9. History of India - 900: History & geography, 950: History of Asia, 954: South Asia; India
10. Heat - 500: Science, 530: Physics, 536: Heat (Had a bit of trouble with this one...)

Exercise from: Davis, S., & New, G. (1997). DDC 13 Workbook: a practical introduction to the
abridged Dewey Classification. (pp.1-75). Wagga Wagga, NSW : Centre for Information Studies.