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8 which is a pure substance? air nitrogen apple juice tap water Guides

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Question Video: Identifying Which Substance Is Chemically Pure [1]

can be considered chemically pure? (A) Air, (B) apple juice, (C). brass, (D) a bar of 24-karat gold, or (E) seawater.
substance as a material that contains only one type of element or compound. a pure substance because it does not contain any contaminants or minerals, just H2O
nitrogen, oxygen, carbon dioxide, and argon, just to name a few. gases, it is not chemically pure and cannot be the answer to this question.

Which of the following is not a pure substance? [2]

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Tap water is a mixture of water and dissolved impurities hence, it is not a pure substance.. Which of the following is not a characteristic feature of a pure substance?

Is air a pure substance ? Or a compound or mixture. [3]

Air is a mixture of gases, mainly nitrogen (78.09%), and oxygen, but containing much smaller amounts of water vapor, argon, and carbon dioxide and very small amounts of other gases. Anything that is a mixture’ is not a pure substance.
Air shows the properties of all the gases present in it.. Whereas a compound is a chemical substance that forms when two or more different elements combine in a fixed ratio

1.3: Classification of Matter [4]

Chemists study the structures, physical properties, and chemical properties of material substances. These consist of matter, which is anything that occupies space and has mass
Energy, light, and sound, however, are not matter; ideas and emotions are also not matter.. The mass of an object is the quantity of matter it contains
Mass is a fundamental property of an object that does not depend on its location.In physical terms, the mass of an object is directly proportional to the force required to change its speed or direction. A more detailed discussion of the differences between weight and mass and the units used to measure them is included in Essential Skills 1 (Section 1.9)

SOLVED: Choose the response that includes all the items listed below that are pure substances: i. apple juice ii. water vapor iii. lake water iv. nitrogen v. potato soup ii, iv i, iii, iv all of them [5]

Get 5 free video unlocks on our app with code GOMOBILE. Choose the response that includes all the items listed below that are pure substances:
Classify each of the following as a pure substance or a mixture:a. Classify each of the following as a mixture or a pure substance.a
Classify the following as mixtures or pure substances.a. the fertilizer your dad spreads on the front lawn in the springc

Is every clear liquid a pure substance? [6]

Not always; tap water is clear but contains many dissolved ions.. The temperature at which a pure solid changes to a liquid is the substance’s melting point.
Not always; tap water is clear but contains many dissolved ions.

Selina ICSE Solutions for Class 9 Chemistry – Elements, Compounds and Mixtures [7]

Selina ICSE Solutions for Class 9 Chemistry – Elements, Compounds and Mixtures. Selina ICSE Solutions for Class 9 Chemistry Chapter 3 Elements, Compounds and Mixtures
– An atom is the smallest particle of an element which takes part in a chemical reaction.. – An element may chemically react with another elements or compounds.
– The molecules are made up of one or more atoms of the same or different elements.. Two elements which show exception to the properties of:

Structure of Matter Classifying and Applying Particle Theory. [8]

Structure of Matter Classifying and Applying Particle Theory. Characteristics of Solids, Liquids and Gases SolidsLiquidsGases Particles have slight vibration movement Particles move around each other in all directions Particles move very fast in all directions
(definite volume and shape) Particles are still close together but change position relative to each other. (definite volume; takes the shape of container) Particles are very far apart
Plasma very hot gas made up of charged particles (both positive and negative) … that is what the word “ionized” means. This state of matter expands when heated and contracts when cooled

Sources

  1. https://www.nagwa.com/en/videos/964195941658/#:~:text=Even%20though%20the%20carton%20may,starches%2C%20vitamins%2C%20and%20minerals.
  2. https://byjus.com/question-answer/which-of-the-following-is-not-a-pure-substance-tap-water-nitric-acid-mercury-distilled/#:~:text=Tap%20water%20is%20a%20mixture,is%20not%20a%20pure%20substance.
  3. https://byjus.com/question-answer/is-air-a-pure-substance-or-a-compound-or-mixture/#:~:text=Air%20is%20a%20mixture%20and,the%20gases%20present%20in%20it.
  4. https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_General_Chemistry_(Petrucci_et_al.)/01%3A_Matter-_Its_Properties_And_Measurement/1.3%3A_Classification_of_Matter
  5. https://www.numerade.com/ask/question/choose-the-response-that-includes-all-the-items-listed-below-that-are-pure-substances-apple-juice-ii-water-vapor-iii-lake-water-iv_-nitrogen-v-potato-soup-iiiv-iiiiiv-all-of-them-are-pure-ii-57212/
  6. https://www.answers.com/chemistry/Is_every_clear_liquid_a_pure_substance
  7. https://imp.center/i/selina-icse-solutions-class-9-chemistry-elements-compounds-mixtures-72137/
  8. https://slideplayer.com/slide/6284390/

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