Assignment+n+Workbook+answers

__**Answer for Workbook Page 10 - 18 (Chap 1 and 2, Chemistry measurement and Separation techniques)**__

__**Answers for Workbook Page 1 - 9 (Chap 3 solid liquid and gas aka Kinetic Particle Theory)**__


 * __Answers for Workbook Worksheet 3 ( Chap 4 Elements, Compounds and Mixtures)__**

Common mistakes for Test It (page 24- 26):

Q4. The diagram for Nitrogen N 2 at room temperature should be gaseous state and each particle is made of two same kind of atom. The '2' in N 2 means that each particle must be of two atoms of Nitrogen.

Q7. The diagram for reaction between two elements that is not yet completed should have two elements and a compound to show that there is two elements there in the first place to form the compound and some elements still remains because the reaction is still going on.

Q8. Compounds can be form between compounds, between non-metals (covalent bond), between metals and non-metal (ionic bond, BUT not between two different metals. Two different metals can only form an alloy which is a mixture.

Q9. Calcium oxide, hydrogen chloride and hydrogen gas are either compounds or elements which are pure substances. Only sugar SOLUTION is a mixture and does not have fixed boiling point.

Q10. AIR - MIXTURE, consist of both elements (oxygen, nitrogen) and compounds (water vapour, carbon dioxide) BRASS - MIXTURE, consist of two metal elements (copper and zinc), mixture of two metals is also known as alloy. COMMON SALT - COMPOUND, sodium chloride, made from an metal element (sodium) and a non-metal element (chlorine) PETROL - MIXTURE, consist of different compounds SALT WATER - MIXTURE, consist of two compounds, SALT (sodium chloride) and WATER (H 2 O) STEEL - MIXTURE, consist of metal element (IRON) and non-metal element (CARBON) WATER - COMPOUND, consist of the elements hydrogen and oxygen

__**Answers for Workbook worksheet 4 (Chap 5 Atomic Structure)**__

__**Answers for Workbook worksheet 5 (Chap 6 Chemical Bonding)**__

__**Answers for Workbook worksheet 6 (Chap 7 Chemical Calculations)**__