Pure Substances and Mixtures, Elements & Compounds, Classification of Matter, Chemistry Examples,

This chemistry video tutorial focuses on pure substances and mixtures. It's a subtopic of the classification of matter. Pure substances include elements and compounds where as a mixture is a combination of two or more pure substances.
Chemistry - Basic Introduction:
• Chemistry
Scientific Notation Review:
• Scientific Notation - ...
Significant Figures Review:
• Significant Figures - ...
Unit Conversion Problems:
• Converting Units With ...
Accuracy and Precision:
• Accuracy and Precision
Density Practice Problems:
• Density Practice Problems
________________________________
Pure Substances & Mixtures:
• Pure Substances and Mi...
Homogeneous & Heterogeneous Mixtures:
• Homogeneous and Hetero...
Physical and Chemical Changes:
• Physical and Chemical ...
Solids, Liquids, Gases, & Plasma:
• States of Matter - Sol...
Physical Vs Chemical Properties:
• Physical vs Chemical P...
__________________________________
Law of Conservation of Mass:
• Law of Conservation of...
Law of Definite Proportions:
• Law of Definite Propor...
Law of Multiple Proportions:
• Law of Multiple Propor...
Rutherford's Gold Foil Experiment:
• Rutherford's Gold Foil...
Cathode Ray Tube Experiment:
• Cathode Ray Tube Exper...
_________________________________
Atoms - Basic Introduction:
• Atoms - Basic Introduc...
Cations and Anions Explained:
• Cations and Anions Exp...
Diatomic Elements & Molecules:
• Diatomic Elements & Mo...
Elements, Atoms, & Molecules:
• Elements, Atoms, Molec...
Protons, Neutrons, & Electrons:
• How To Calculate The N...
_______________________________
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections

[@TheOrganicChemistryTutor]

General Chemistry 1 Review: bit.ly/3DNmZqb
Final Exams and Video Playlists: www.video-tutor.net/

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Professor Organic Chemistry Tutor, thank you for analyzing and exploring the difference between Pure Substances and Mixtures, Elements/Compounds etc. The chemistry examples really tell the story about Pure Substances and Mixtures in AP/General Chemistry. This is an error free video/lecture on UA-cam TV with the Organic Chemistry Tutor.

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How atoms combine in a fixed ratio
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What is ice , vinegar and paper

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ice is a pure substance
paper is a mixture
vinegar is acetic acid which is a pure substance

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How is salt a pure substance when it is composed of Na and Cl?

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Eric Judkins-van buren Not 100% sure but I think it’s because salt cannot be converted back into the two separate elements

[@deepans38]

Pure substance is anything that has one type of particle hence salt contain only Nacl molecule .

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@@deepans38 So NaCl is the particle not Na and Cl? That is what is confusing me.

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Pure substances can be broken down into elements and compounds. Salt is a compound and compound falls into pure substances. That's why salt is a pure substance.

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Pure substance can be a compounf ir elwment

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Is chlorophyll a pure substance

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sir air and sea water are both mixture

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Yep kid sea water contains salt+water and air contains many gases like oxygen, nitrogen, hydrogen, etc.

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If u just mean air as in air not other gases, air is a pure substance

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why is that nitrogen and oxygen combined is a mixture, but hydrogen and oxygen combined is a pure substances?

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I know I'm late but compounds are classified as pure substances

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When nitrogen and oxygen chemically combine then it is a pure substance. If they are not chemically combined and are able to be separated by physical means then it is a mixture.

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3:20 7:13

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sorry but i do believe that if you added salt to a water solution and electrified the solution it would make hydrogen and chlorine gas, this is how they make sodium hydroxide and chlorine for bleach right?

[@Jamal-wo2qc]

I think it depends on the type of salt that you add into water solution (forming the electrolyte) if the positive metal ion is more reactive than hydrogen on the periodic table then hydrogen gas gets releases from the cathode ,however , if the metal ion in the salt compound is less reactive then it forms as deposits surrounding the negative electrode. If there are no halide ions present in the salt compound then oxygen gets released from the anode if there is then the halogen gets released from the anode.
Not all salts make hydrogen and chlorine gas when it is "electrified"
The salt you are talking about is sodium chloride.

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is honey a pure substance or a mixture?

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AYA aya honey is a mixture (contains glucose, fructose, maltose, water, etc.)

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I think it's a pure substance cause we can't separate it's own components by a physical process like we can't heat it to it turns to glucose , water like the comment above

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How is water a pure substance

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Is oxygen gas a pure substance or a mixture?

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Pure substance because its an element

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I don't understand... So it's a compound a pure substance??

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Pure substance are compound and element
Mixture are Homogeneous and heterogeneous

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I was thinking the same thing

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Sir, water is a compound

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minakshi choudhury if water have 2atoms than why it’s in pure substances.

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@@sobiariaz6786 thought the same

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@@sobiariaz6786 as those atoms are chemically bonded together

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1:14 But water is also a homogeneous mixture, so wouldn't it be considered both a pure substance and a mixture?

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Never mind, I now understand why water is a compound.

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Brass is alloy, not Mixture.

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What...?