ComparingStructures

Before you begin, please enter your group members names in the table below:

 * = Group Number || Names of group members (include index numbers) || Question number ||
 * = 1 || Lim Yin Yu, Lee Man Lin, Esther Leong, Gwen Yap || Q1 & Q2 ||
 * = 2 || Eleanor, Celine, Wing Shan, Emeline || Q2 & Q3 ||
 * = 3 || Sandra, Priyanka, Zhang Yue, Vivian, Yu Shan, Cheryl || Q3 & Q4 ||
 * = 4 || Aletheia, Jia Le, Rachel || Q5 & Q1 ||
 * = 5 || Carrissa, Si Cheng, Sherilyn, Christina, Cassandra, Michelle || Q4 & Q5 ||
 * = 6 || Fangda, Clara, Lou Shan, Hui Xian || Q3 & Q5 ||
 * = 7 || Kelly (28), Reetaza (19), Li Shuan (23), Jessie (9) || Q1 & Q4 ||

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(A) The two diagrams in each of the following questions show how particles are arranged in different substances. Think about how the two diagrams are similar and how they are different.=====

Q1,



The distance apart from each other are about the same. Both are not solids, as they are packed close to each other but in random arrangement Both substances consist of discrete particles. || There is more than on type of atom chemically bonded together in each molecule in Fig one therefore it is a compound. There is only one type of atom in Fig 2, therefore it is an element. Fig 1 consists of 2 elements, Fig 2 consists of 1 element. || The atoms/molecules are more spaced out in Fig 2 than Fig 1, so the latter is probably in a liquid state while Fig 2 is probably in a gaseous state ||
 * = Group number || **Similarities** || **Differences** ||
 * = 1 || There is only one type of particle present in both diagrams therefore they are both pure.
 * = 4 || Both are pure substances, containing only one type of molecules/elements || The first is made out of water molecules, while the second is made out of Helium atoms
 * = 7 || The particles of both substances are not closely packed together so they are in gaseous states. || The first one consists of molecules of a compound while the seconds one consists of atoms of an element (more specifically the noble gas helium). ||

Q2.

They are both packed closely together in an orderly manner. They are not mixtures || Fig 1 consists of pure elements while Fig 2 is made up of pure compounds. Fig 1 shows iron atoms while Fig 2 consists of sodium chloride ions. . ||
 * = Group number || **Similarities** || **Differences** ||
 * = 1 || They are both solids.
 * = 2 || Tightly packed in an orderly arrangement || 1st Diagram consists of atoms while the 2nd Diagram consists of ions ||

Q3.


 * = Group number || **Similarities** || **Differences** ||
 * = 2 || Both are stable since they are bonded such that they have 8 electrons at the valence shell. || The first diagram is covalently bonded while the second diagram is ionic bonded. ||
 * = 3 || * The atoms in both boxes are chemically bonded to each other
 * The molecules are closely packed together, with very little space between one another || * The first box is covalently bonded while the second one is ionic bonded.
 * The first box is an element while the second is a compound. ||
 * = Th6 ||  ||   ||

Q4.

Both are elements. Both are non-metals and covalently bonded. || The iodine is in the solid form (molecules are closely packed together) while the nitrogen is in the gaseous form (molecules are far apart). || -Diatomic molecules Both only have 1 type of atom. || -Iodine molecules are in packed closely together(solid state); nitrogen molecules are in random motion (gaseous state) ||
 * = Group number || **Similarities** || **Differences** ||
 * = 3 || Both contain diatomic molecules.
 * = 5 || -Both have discreet particles
 * = 7 || Both the substances are elements, consisting of diatomic molecules. || The molecules of the iodine are closely packed together in an orderly arrangement resembling the structure of a solid but the molecules of nitrogen are far apart from each other resembling the structure of a gas. ||

Q5. There are more spaces in between the the molecules in Fig 2 than Fig 1 FIg 1 shows a giant lattice formed by ionic bonding while in Fig 2, the water molecules have pulled the ions away || First one consists of all ions while the second one consists of molecules and ions. || -Both involve sodium chloride || -One is a solid (as seen from the tightly packed particles) while the one on the right is a liquid -The one on the left is a compound while the one on the right is a mixture -The one on the left shows ionic bonding while the one on the right shows covalent bonds -The one on the left forms a giant lattice ||
 * = Group number || **Similarities** || **Differences** ||
 * = 4 || They both contain sodium and chloride ions || FIg 2 contains water molecules, while Fig 1 does not.
 * = 5 || Both are non-discreet || First one is a giant lattice while the second one is a mixture.
 * = 6 || -Both involve ions