https://padlet.com/science92/3PRPeriodicTrends Trends across Period 3 en-us 2021-10-14 23:11:00 UTC 2025-11-14 02:41:13 UTC hello@padlet.com https://padlet.net/icons/png/1f469-1f52c.png https://padlet.com/science92/3PRPeriodicTrends/wish/2648882738 Period 3 elements become less metallic as we move from left to right. ]]> 2023-07-21 01:23:10 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648882738 https://padlet.com/science92/3PRPeriodicTrends/wish/2648883148 From left to right the elements progressively decrease in its metallic properties. ]]> 2023-07-21 01:23:42 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648883148 https://padlet.com/science92/3PRPeriodicTrends/wish/2648883153 Elements till group 13 are metals while the elements in group 14-18 are non metals ]]> 2023-07-21 01:23:42 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648883153 https://padlet.com/science92/3PRPeriodicTrends/wish/2648883260 Elements in period 3 have different chemical properties as we move from left to right. This is because the elements have increasing number of valence electrons when we move from the left to right. ]]> 2023-07-21 01:23:51 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648883260 https://padlet.com/science92/3PRPeriodicTrends/wish/2648883425 Elements in period 3 are metallic up till group 13. Elements after are non-metallic. ]]> 2023-07-21 01:24:03 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648883425 https://padlet.com/science92/3PRPeriodicTrends/wish/2648883751 They are progressively less reactive 
Their proton number increases ]]> 2023-07-21 01:24:31 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648883751 https://padlet.com/science92/3PRPeriodicTrends/wish/2648884259 Elements in period 3  have different physical properties as the atomic number increases from left to right. ]]> 2023-07-21 01:25:11 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648884259 https://padlet.com/science92/3PRPeriodicTrends/wish/2648884422 Different
The metals in period 3 lose their valence electrons to form positive ions while the non- metals will gain electrons to form negative ions.]]> 2023-07-21 01:25:24 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648884422 https://padlet.com/science92/3PRPeriodicTrends/wish/2648885360 From left to right, the electrical conductivity of the elements decrease]]> 2023-07-21 01:26:41 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648885360 https://padlet.com/science92/3PRPeriodicTrends/wish/2648885580 Elements in Period 3 have different chemical properties as they have different charges and valence electrons.]]> 2023-07-21 01:26:59 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648885580 https://padlet.com/science92/3PRPeriodicTrends/wish/2648885591 The elements in period 13 have an increasing atomic mass as you move from left to right.]]> 2023-07-21 01:27:00 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648885591 https://padlet.com/science92/3PRPeriodicTrends/wish/2648886365
- Their metallic properties decrease from left to right  
- Elements from group 1-13 are metals and elements in group 14 onwards are non-metals]]> 2023-07-21 01:27:39 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648886365 https://padlet.com/science92/3PRPeriodicTrends/wish/2648887284 The number of valance electrons increases from group 1 to 18]]> 2023-07-21 01:28:50 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648887284 https://padlet.com/science92/3PRPeriodicTrends/wish/2648888314 It gets less reactive from left to right
They have a more valance shells as they move from left to right

]]> 2023-07-21 01:30:00 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648888314 https://padlet.com/science92/3PRPeriodicTrends/wish/2648888332 The metals will combine with oxygen to form ionic bonds while the non metals will combine with oxygen to form simple covalent bonds.]]> 2023-07-21 01:30:01 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648888332 https://padlet.com/science92/3PRPeriodicTrends/wish/2648888349 - The metals from group 1-13 lose their valence electrons while the non-metals from group 14 onwards gain electrons. 


]]> 2023-07-21 01:30:03 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648888349 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889014 The structure of the oxides of period 3 elements go from an ionic crystal lattice structure to simple molecular as we move from left to right- not including Argon, which is unreactive. ]]> 2023-07-21 01:30:52 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889014 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889101 Different. Since chemical properties depend on the number of valence electrons and elements in the period have different number of valence electrons, they have different chemical properties]]> 2023-07-21 01:30:58 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889101 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889102 Period 3 elements have different chemical properties. This is possibly due to two reasons. (1) Some elements are metallic while others are not metallic. (2) Elements have different number of valence electrons]]> 2023-07-21 01:30:58 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889102 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889547 Elements have similar physical properties because of its increasing atomic mass.]]> 2023-07-21 01:31:32 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889547 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889687 Basic oxides 🐂 - sodium and magnesium 
Amphoteric - aluminium
Acidic -sulfur and silicon dioxide ]]> 2023-07-21 01:31:42 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889687 https://padlet.com/science92/3PRPeriodicTrends/wish/2648889734 The pH of the oxides of period 3 elements decrease as we move from the left to right- not including Argon, which is a noble gas and is thus unreactive. ]]> 2023-07-21 01:31:46 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648889734 https://padlet.com/science92/3PRPeriodicTrends/wish/2648890195 They react with either acids or bases to from salt and water. ]]> 2023-07-21 01:32:24 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648890195 https://padlet.com/science92/3PRPeriodicTrends/wish/2648890269 They go basic to neutral to acidic]]> 2023-07-21 01:32:29 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648890269 https://padlet.com/science92/3PRPeriodicTrends/wish/2648890323 Sodium oxide is basic, Magnesium oxide is basic, aluminium oxide is amphoteric, sulfur and silicon dioxide are acidic ]]> 2023-07-21 01:32:34 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648890323 https://padlet.com/science92/3PRPeriodicTrends/wish/2648890695 These oxides react with acids to form salt and water.]]> 2023-07-21 01:33:02 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648890695 https://padlet.com/science92/3PRPeriodicTrends/wish/2648890706 The nature of oxides changes from basic to amphoteric to acidic as the pH level decreases as we progress through period 3. ]]> 2023-07-21 01:33:03 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648890706 https://padlet.com/science92/3PRPeriodicTrends/wish/2648891030 - They have different physical properties - the metals are good conductors of heat while the non-metals are poor conductors of heat
- The metals have high melting and boiling points while the non-metals have low melting and boiling points]]> 2023-07-21 01:33:31 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648891030 https://padlet.com/science92/3PRPeriodicTrends/wish/2648891234 The basic oxides react with acids while the acidic oxides react with alkali to form salt and water. The amphoteric oxides can react with both acids and alkali.]]> 2023-07-21 01:33:51 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648891234 https://padlet.com/science92/3PRPeriodicTrends/wish/2648891615 Different. The atomic radius decreases as you go along the period and they have the same valence shell hence their physical properties are different.]]> 2023-07-21 01:34:05 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648891615 https://padlet.com/science92/3PRPeriodicTrends/wish/2648892364 They are able to react with different chemicals (acidic and alkaline) to form substances ]]> 2023-07-21 01:35:23 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648892364 https://padlet.com/science92/3PRPeriodicTrends/wish/2648892575 - the non-metals combine with other non-metals to form covalent bonds -> Simple molecular structure (Argon does not react)

- the metals combine with non-metals to form ionic bonds -> giant ionic crystal lattice structure

]]> 2023-07-21 01:35:37 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648892575 https://padlet.com/science92/3PRPeriodicTrends/wish/2648893087 The metallic elements in period 3 will form ionic bonds to form a giant ionic crystal lattice structure, while the non-metallic elements will form covalent bonds to form a simple molecular structure.]]> 2023-07-21 01:36:14 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648893087 https://padlet.com/science92/3PRPeriodicTrends/wish/2648893301 Giant crystal lattice structure to Simple covalent structure]]> 2023-07-21 01:36:36 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648893301 https://padlet.com/science92/3PRPeriodicTrends/wish/2648893420 - They go from basic to amphoteric to acidic. Argon is a noble gas- does not react ]]> 2023-07-21 01:36:51 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648893420 https://padlet.com/science92/3PRPeriodicTrends/wish/2648894154 Metallic elements (for example magnesium) form basic oxides that react with acid to form water and salt, and also turns moist red litmus paper blue.
Aluminium forms amphoteric oxides that react with both acid and alkali to form salt and water.
Non-metallic elements (for example sulfur) form acidic oxides that react with alkali to form water and salt, and also turns moist blue litmus paper red ]]> 2023-07-21 01:37:58 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648894154 https://padlet.com/science92/3PRPeriodicTrends/wish/2648894347 Basic oxides react with acids to form salt and water
Amphoteric oxides react with both acids and alkalis to form salt and water
Acidic oxides react with bases/alkalis to form salt and water

]]> 2023-07-21 01:38:16 UTC https://padlet.com/science92/3PRPeriodicTrends/wish/2648894347