The words ذلك that, و and

Today I am learning two words, that is:

1. ذلك zaalika meaning that.
2. و wa meaning and.

Interestingly I notice that although ذلك is written without an ا after ذ, the pronunciation is not zalika but zaalika. It is as though there is an ا after ذ making it sound like a long vowel. By the way, I am also adding new words into my vocabulary in this lesson. Time to make sentences :)

1. ما ذلك؟ maa zaalika? What is that?
   ذلك شقة zaalika shaqqatun. That is an apartment.
2. أذلك منزل؟ azaalika manzilun? Is that a house?
   ﻵ, ذلك مبنى laa, zaalika mabna. No, that is a building. 
3. ما هاذا وما ذلك؟ maa haazaa wa maa zaalika? What is this and what is that?
   هاذا تلفزيون و ذلك تلفون haazaa telefiziyyun wa zaalika tilifuun. This is a television and that is a telephone.
4. من هاذا و من ذلك؟ man haazaa wa man zaalika? Who is this and who is that?
   هاذا أخ و ذلك يتيم haazaa akhun wa zaalika yatiimun. This is a brother and that is an orphan.