https://padlet.com/science92/3SYPeriodicTrends Trends across Period 3 en-us 2021-10-14 12:23:01 UTC 2025-11-06 10:45:55 UTC hello@padlet.com https://padlet.net/icons/png/1f469-1f52c.png https://padlet.com/science92/3SYPeriodicTrends/wish/2648221887 From sodium to aluminium, the elements are metallic. From silicon to argon, the elements are non-metallic ]]> 2023-07-20 01:29:05 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648221887 https://padlet.com/science92/3SYPeriodicTrends/wish/2648222880 They will be different as they are not in the same group.]]> 2023-07-20 01:30:02 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648222880 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223002 Sodium, Magnesium, Aluminium are metals. They can conduct electricity.


Silicon, Phosphorus, Sulfur, chlorine, argon are non metals ]]> 2023-07-20 01:30:09 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223002 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223052 From Group 1-3, the elements are metallic and can conduct electricity. From Group 4-8, the elements are non-metallic and thus cannot conduct electricity.]]> 2023-07-20 01:30:12 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223052 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223232 The chemical properties change as it goes across Period 3 as the number of valence electrons giving the elements the chemical properties increases.]]> 2023-07-20 01:30:23 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223232 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223498
It will be different due to the different number of neutrons from left to right of the periodic table. ]]> 2023-07-20 01:30:39 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223498 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223548
The metal elements are grouped in group 1,2,13, and the non metals follow from group 14-18. Transition metals are from group 3-12.]]> 2023-07-20 01:30:42 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223548 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223722 Different. Different number of valence electrons. Number of valence electrons increases across the period.]]> 2023-07-20 01:30:53 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223722 https://padlet.com/science92/3SYPeriodicTrends/wish/2648223949 The physical properties change across the Period as the number of neutrons increases. ]]> 2023-07-20 01:31:04 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648223949 https://padlet.com/science92/3SYPeriodicTrends/wish/2648224150 The elements from sodium to aluminium bond with oxygen to form a ionic oxide while the elements from silicon to chlorine bond with oxygen to form a covalent oxide and argon is a noble gas and does not react with oxygen]]> 2023-07-20 01:31:19 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648224150 https://padlet.com/science92/3SYPeriodicTrends/wish/2648224173 They are different because they are not in the same group]]> 2023-07-20 01:31:21 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648224173 https://padlet.com/science92/3SYPeriodicTrends/wish/2648224226 The physical properties of the elements are different as they are in different groups ]]> 2023-07-20 01:31:24 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648224226 https://padlet.com/science92/3SYPeriodicTrends/wish/2648224318 Higher Bp and MP —> Lower BP and MP
More reactive —> less reactive 
Number of valence electrons increases]]> 2023-07-20 01:31:31 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648224318 https://padlet.com/science92/3SYPeriodicTrends/wish/2648224699 The elements are in different groups and hence possess different chemical properties, such as their valency]]> 2023-07-20 01:31:57 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648224699 https://padlet.com/science92/3SYPeriodicTrends/wish/2648225409 The metallic elements form basic oxides. 
Aluminium forms an amphoteric oxide. Non-metallic elements 
 form acidic oxides. ]]> 2023-07-20 01:32:51 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648225409 https://padlet.com/science92/3SYPeriodicTrends/wish/2648225755 Sodium, magnesium and aluminium are metals: therefore exhibit the properties of metals

Silicon, phosphorus, sulfur, chlorine and argon are non-metals: therefore exhibit the properties of non-metals

Identified by the line that separates metals and non-metals in the periodic table as well as the number of valence electrons, identified by the group number of the elements]]> 2023-07-20 01:33:18 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648225755 https://padlet.com/science92/3SYPeriodicTrends/wish/2648225976 The metals will form ionic bonds with oxygen and non-metals form covalent bonds with oxygen. Argon will not form an oxide as it is a noble gas]]> 2023-07-20 01:33:35 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648225976 https://padlet.com/science92/3SYPeriodicTrends/wish/2648225991 The chemical properties are different as the valence electrons determines the chemical properties. Across the period, the elements have an increase in the valence elections, thus their chemical properties will be different.]]> 2023-07-20 01:33:35 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648225991 https://padlet.com/science92/3SYPeriodicTrends/wish/2648226414 The metal and non-metal elements all have different physical properties, like how the elements bond differently to each other, leading to different melting and boiling points, and solubility.

]]> 2023-07-20 01:33:48 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648226414 https://padlet.com/science92/3SYPeriodicTrends/wish/2648226438 Sodium to Aluminium bond with oxygen to form basic oxides. Silicon to chlorine bond with oxygen to form acidic oxides. Argon is a noble gas that does not react with anything. ]]> 2023-07-20 01:33:49 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648226438 https://padlet.com/science92/3SYPeriodicTrends/wish/2648226535 The metals form ionic bonds with oxygen and the non-metals form covalent bonds. Argon is a noble gas and does not bond with oxygen ]]> 2023-07-20 01:33:57 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648226535 https://padlet.com/science92/3SYPeriodicTrends/wish/2648226605 metal forms ionic bonds
non metals can form ionic, covalent etc. bonds]]> 2023-07-20 01:34:02 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648226605 https://padlet.com/science92/3SYPeriodicTrends/wish/2648227507 Physical properties are likely to differ-
Na to Al: 
1. Shiny 
2. Malleable and ductile
3. high mp and bp 
4. good conductor of electricity 
5. Good conductors of heat 

Si-Ar:
1. Dull
2. Brittle 
3. low mp and bp
4. bad conductor of electricity 
5. poor conductors of heat ]]> 2023-07-20 01:35:12 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648227507 https://padlet.com/science92/3SYPeriodicTrends/wish/2648227748 Sodium and magnesium form basic oxides. Aluminium forms an amphoteric oxide. Silicon to chlorine form acidic oxides. ]]> 2023-07-20 01:35:24 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648227748 https://padlet.com/science92/3SYPeriodicTrends/wish/2648227859 acidic oxides formed by non metals have low pH while basic oxides formed by metals have higher pH]]> 2023-07-20 01:35:32 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648227859 https://padlet.com/science92/3SYPeriodicTrends/wish/2648227999 They have different chemical properties as they have the same number of electron shells (same period) but different number of valence electrons (different groups). They have different physical properties as some elements are metal while others are non-metal elements. ]]> 2023-07-20 01:35:42 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648227999 https://padlet.com/science92/3SYPeriodicTrends/wish/2648228099
Metals bond to form basic oxides, whereas the non metals such as silicon oxide are acidic.]]> 2023-07-20 01:35:49 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648228099 https://padlet.com/science92/3SYPeriodicTrends/wish/2648228489 Basic oxides like sodium oxide, magnesium oxide react with acid to form salt and water and is solid in room temperature. Amphoteric oxides like aluminium oxide reacts with a both acid and alkali to form salt and water. Acidic oxides like silicone oxide, phosphorus oxides, sulfur oxide, etc reacts with alkali to form salt and water while argon is a noble gas and is non metallic and doesn’t form oxides]]> 2023-07-20 01:36:14 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648228489 https://padlet.com/science92/3SYPeriodicTrends/wish/2648228675 Metal oxides are basic in nature and exists as solids at room temp. They react with acids to form salt and water. Non metal oxides are acidic in nature and exists mostly as gas at room temperature. They dissolve i’m water to form acids ]]> 2023-07-20 01:36:25 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648228675 https://padlet.com/science92/3SYPeriodicTrends/wish/2648228773 The metallic elements- sodium and magnesium are basic oxides. However, aluminium is an amphoteric oxide. The non-metallic elements are acidic oxides.]]> 2023-07-20 01:36:29 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648228773 https://padlet.com/science92/3SYPeriodicTrends/wish/2648229263 metals and non-metals have different physical properties 
for eg. certain metals combine with oxygen to form oxides ]]> 2023-07-20 01:37:02 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648229263 https://padlet.com/science92/3SYPeriodicTrends/wish/2648229541 The metallic elements form ionic bonds with oxygen. Non-metallic elements form covalent bonds with oxygen.]]> 2023-07-20 01:37:26 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648229541 https://padlet.com/science92/3SYPeriodicTrends/wish/2648229587 Na, Mg form basic oxides as they are metals.

Al forms amphoteric oxides.

Si, P, S and Cl form acidic oxides as they are non metals.

Ar does not form an oxide as it is unreactive.]]> 2023-07-20 01:37:31 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648229587 https://padlet.com/science92/3SYPeriodicTrends/wish/2648229887 Acidic oxides react with water to form acids. 
Basic Oxides react with water to form alkalis 
Amphoteric Oxides react with both acid and alkali to form salt and water.]]> 2023-07-20 01:37:40 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648229887 https://padlet.com/science92/3SYPeriodicTrends/wish/2648230196 Sodium to aluminium(metals)conduct electricity while silicon to chlorine(non-metals) do not conduct electricity. ]]> 2023-07-20 01:38:03 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648230196 https://padlet.com/science92/3SYPeriodicTrends/wish/2648232631 Acidic oxides form acids when dissolved in water and react with alkalis to form salt and water only. Basic oxides form alkalis when dissolved in water and react with acids to form salt and water only. Amphoteric oxides can react with both acids and alkalis to form salt and water only. ]]> 2023-07-20 01:41:16 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648232631 science92 https://padlet.com/science92/3SYPeriodicTrends/wish/2648258934 Don't forget the aluminium oxide which is amphoteric]]> 2023-07-20 02:09:24 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648258934 science92 https://padlet.com/science92/3SYPeriodicTrends/wish/2648261920 Aluminium bonds with oxygen to form an amphoteric oxide]]> 2023-07-20 02:12:04 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648261920 science92 https://padlet.com/science92/3SYPeriodicTrends/wish/2648263102 Structure of oxide refers to bonding structures - ionic giant crystal lattice structure, giant covalent structure, simple covalent structure.]]> 2023-07-20 02:13:16 UTC https://padlet.com/science92/3SYPeriodicTrends/wish/2648263102