Y10 Pure or impure by Tine https://padlet.com/tine_willis/yya8rr2ky7nf Made with a dash of wit en-us 2018-09-07 00:04:48 UTC 2025-10-18 20:02:47 UTC hello@padlet.com Explain the difference between pure and impure substance. How can scientists tell the difference? tine_willis https://padlet.com/tine_willis/yya8rr2ky7nf/wish/278682814 Mrs Willis]]> 2018-09-07 00:08:51 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/278682814 Questions https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825019
Most: A colourless liquid was found to have a boiling point of 105 oC. Is it pure? Explain how you know this. 
Extension: What is the difference between pure and impure substances? How do we know if a substance is pure?
]]> 2022-09-01 05:48:34 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825019 Sean Nam swnam0827 https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825582 Most - Impure. Because pure substance's boiling point is 100 degrees Celsius instead of 105 degrees Celsius.

Extension - Impure substance has higher boiling and lower freezing point then pure substance. Also a pure substance has a constant chemical composition.]]> 2022-09-01 05:49:07 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825582 Ethan wongyeekhai1812 https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825971 I cannot tell if it's a pure liquid because other liquids also boil at 105 degrees it does it say what liquid it is. pure substance only have the same types of atoms while impure substance have other types of atoms in it.

]]> 2022-09-01 05:49:30 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278825971 Lucas Tan https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278826921 It is impure because the boiling point of a pure water would be at one hundred degrees Celcius. ]]> 2022-09-01 05:50:25 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278826921 Umar https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828181 It is impure because a pure liquid's boiling point is lower than that of an impure liquid. The impure's is 105 while the pure's is 100 degrees.]]> 2022-09-01 05:51:34 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828181 Qianyi https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828722 Cant tell because of how information is shown


A pure substance has a constant chemical composition. and an impure substance does not]]> 2022-09-01 05:52:09 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828722 kendrick https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828943 you cannot know because it can be a different liquid other then water and the only thing you know is it is colourless ]]> 2022-09-01 05:52:23 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278828943 Mayuri mayurimanimaran https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278829246 It is impure, because pure water boils at 100 oC but if it impure it will take much longer to boil.
Extension: Pure is when there is nothing chemically mixed into it and impure is when something is mixed into it just like chocolate. we can tell that the substance is pure when it boils when it hits 100 oC but if it boils above 100 oC it is considered impure.]]> 2022-09-01 05:52:38 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278829246 Ashley yupitsashley https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278829601 Impure, because this substance's boiling point is 105 degrees Celsius and the boiling point of a pure substance is 100 degrees Celsius. 
Extension
Pure substances have a boiling point of 100 degrees Celcius. Impure substances have a range of boiling points.]]> 2022-09-01 05:52:58 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278829601 Heidi T xingyun1008 https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830003 It is impure because water's boiling point is 100oC. However, it that liquid has a boiling point of 105oC. Therefore, it is impure.

Pure substances have one type of atom. Meanwhile, impure substances has at least two different atoms. To tell if the substance is pure, you have to boil it to find out. Since pure substance's boiling point is 100oC, anything above that is impure.]]> 2022-09-01 05:53:26 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830003 Muhammad Haziq https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830004 The colorless liquid is impure, you can tell because it's boiling point is higher than 100 degrees Celsius.

Pure substances have a sharp melting and boiling point and impure substances have a range of melting and boiling points. Scientists can tell by either experimenting the substance's different boiling and melting points or they can use chromatography paper to see if it is made up of 1 ion (Pure) or 2 or more ions (Impure).]]> 2022-09-01 05:53:26 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830004 ENgel https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830838 It isn't pure as a boiling point is usually at 100. When something is impure, the boiling temperature is higher. 

Find the melting point of a substance, pure substances have sharp melting points. mixtures melt over a range of temperatures/ boiling it and checking if there are any remainings.

]]> 2022-09-01 05:54:22 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278830838 Nik Aamile https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832436 It is impure because pure water boils at 100 degrees while this liquid melts at 105 degrees. The difference between pure and impure substances is that pure substance has the same chemical substance while impure does not]]> 2022-09-01 05:55:54 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832436 Zeng https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832900 most- It depends, this is because the "colourless liquid" could be any substance, with any boiling point. However, if this colourless liquid boils and condenses at precisely 105oC, Then it is indeed pure. If you conduct multiple tests with the colourless liquids and results in multiple boiling points that varies, then it is impure.  

Extention: An impure substance wouldn't have a precise boiling/melting point, impure substances wouldn't have a sharp boiling/melting point. 

A pure substance would have a specific boiling/melting point, also known as a sharp boiling/melting point. 

]]> 2022-09-01 05:56:15 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832900 Elena Kim https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832933  

Most - It is impure because impure substances boil at one hundred degrees. However this boils at one hundred and five degrees. 

Extension-  Pure substance has a fixed boiling point. But, impure substance boiling point could be various. It could be more higher temperature than pure substance]]> 2022-09-01 05:56:18 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278832933 JiaYi/Kiki https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278833119 Most - Depends/Not sure, we do not know what this colourless liquid is. Different liquids have a different boiling point. 

Extension - Pure substance has a fixed boiling point, whilst impure substances could be high or lower]]> 2022-09-01 05:56:31 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278833119 Aileen https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278833134 The liquid of a 105C boiling point would be impure, because if there was no other substance dissolved in it, it would have been at 100C. If it is suspected not to be water, we would need to distill it to see if there is any impurities that have not evaporated

EXT: Impure substances have higher boiling points and lower melting points than pure substances]]> 2022-09-01 05:56:32 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278833134 Yi Zen https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278835075 We are not able to tell if the colorless substance is pure or impure since we do not know its pure boiling temperature or the name of the substance. This is because there are many other substances that could also have a melting point of 105 degrees.

Extension:
pure substances only have one element in them and have a sharp melting temperature. Impure substances are a mixture of two or more elements and have a range of melting temperatures.]]> 2022-09-01 05:58:44 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278835075 isabelle https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278835087 It is not pure because pure water or pure liquid will only boil at a 100 oC however this substance's boiling point is 105 oC. ]]> 2022-09-01 05:58:45 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278835087 Janelle https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278836100 Most - It is unknown because it is not mentioned what the substance is. If the liquid is water, then the substance would be impure as water boils at a fixed temperature of 100 degrees Celsius.
Extension - Pure substances have a fixed melting or boiling point while impure substances boil or melt over a range of temperatures.]]> 2022-09-01 05:59:50 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278836100 Matthew https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278836292 Can't tell because we are not sure on what the liquid is and there is not a lot of information.]]> 2022-09-01 06:00:02 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278836292 Ishan https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278837304 Most : It is impure,because the boiling point of pure water is at 100 degrees celcius. Pure substances contains the same chemical substance however impure does not.

Extension : The difference between pure and impure substance is that pure substances have constant chemical composition and impure substances boil or melt over a range of temperatures.

]]> 2022-09-01 06:01:06 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/2278837304 Ng Jing Jun https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555016914 It is not pure because pure water or pure liquid will only boil at a 100 degrees celcius

]]> 2025-08-26 05:44:18 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555016914 Krithish https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555016923 No, a colorless liquid with a boiling point of 105°C is not pure. Pure substances have a specific, fixed boiling point (pure water boils at 100°C), whereas the presence of impurities raises the boiling point.

]]> 2025-08-26 05:44:19 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555016923 Alexxxxxxxxxxxxxxx https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555018311 Pure substance has a boiling point of 100 degrees Celsius and a freezing point of 0 Celsius. An impure substance boil over 100 degrees Celsius and freezes below 0 degrees Celsius.

]]> 2025-08-26 05:45:23 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555018311 Ct https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555018583 Impure substances tend to have higher boiling points and also have lower melting points compared to those of pure substances. However, it is hard to tell if a substance is pure or impure if we do not know the temperqture of the pure substance that the impure substance is being compared to.

]]> 2025-08-26 05:45:33 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555018583 Suvarn https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555019563 Most: The colorless liquid is impure because the boiling point is higher than a 100 Celsius



Extension: Pure - One type of substance

Impure - more than one type of substance





]]> 2025-08-26 05:46:28 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555019563 yauqoob https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555021020 pure substances boil at 100degrees and freeze at 0 impure substance boils higher than 100 degrees and freezes below 0 degrees

]]> 2025-08-26 05:47:01 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555021020 Anna & Avril https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555021689 The difference between pure and impure substances is that impure contains more than one in the substance and their boiling & melting points aren’t the same. We know a substance is pure if it is made out of only one type of element or compound and has a constant,specific melting and boiling point

]]> 2025-08-26 05:47:34 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555021689 Josh https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555022476 Most: The liquid (water) is impure as it has a boiling point higher than 100 degrees celcius/above the normal boiling point of normal water

]]> 2025-08-26 05:48:09 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555022476 timothy https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555022601 boiling point of a pure substance is 100 degrees and freezes at 0 degrees while an impure substance always melt at a lower temperature and boil at a higher temperature than pure substances.

]]> 2025-08-26 05:48:16 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555022601 Mogeon Kim https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023060 Impure substance higher boiling point and lower melting point. If you don't know what is pure and impure, boiling both of them and check which of them is boiled fast

]]> 2025-08-26 05:48:39 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023060 Seobeen Park https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023101 It’s not pure, because the colorless liquid, water has 100’c in boiling point, but it’s over.


Impure substance has higher boiling point and lower melting point than pure substance. How to determine is boiling both substances and check which substance boils faster

]]> 2025-08-26 05:48:41 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023101 Gavriel https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023174 A colourless liquid with a boiling point of 105 degree Celsius is impure.Pure substances only have fixed boiling points/melting points.


]]> 2025-08-26 05:48:46 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023174 JJ https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023225 impure water boils at a different temperature because the other substances have different boiling points.


a pure substance is a material that consist of only one type of particle (elements, compounds, etc.)


An impure substance would consist of different substances.

]]> 2025-08-26 05:48:49 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023225 Ziad https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023315 The colorless liquid is impure as the boiling point is 105 celcius where as pure substances only can reach 100 celcius


the difference between pure and impure is pure consist of one atom while impure is a mixture of two or more substance

]]> 2025-08-26 05:48:54 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023315 avril https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023978 The boiling point of pure water is 100 degrees celsius therefore it's impure. Impure substances boiling point is higher than 100 degrees


extension: pure substance only consists of one element

impure consists of two or more elements

]]> 2025-08-26 05:49:19 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555023978 Chloe tan https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555026026 The colourless liquid is impure because the boiling point of pure water has a fixed boiling point of 100 degrees.

]]> 2025-08-26 05:51:08 UTC https://padlet.com/tine_willis/yya8rr2ky7nf/wish/3555026026