Elements, Compounds And Mixtures
Bayani Gaba-gaba
Look around you and almost everything is a mixture: the air you breathe, the sea water at the coast, even the steel in a bridge. Pure substances are actually quite rare in the everyday world. To make sense of matter, chemists sort it into three kinds, elements, compounds and mixtures, and each behaves in its own distinct way.
In this lesson you will learn exactly what separates an element from a compound, and a compound from a mixture. The key ideas are simple but powerful: an element has just one kind of atom, a compound joins atoms chemically in fixed proportions, and a mixture is just substances put together without any chemical bond.
Manufura
- [Core] Describe the differences between elements, compounds and mixtures
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Barka da kammala darasi akan Elements, Compounds And Mixtures. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
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- Which of these is an element? A. Water B. Air C. Copper D. Sea water Answer: C
- Which of these is a compound? A. Oxygen B. Carbon dioxide C. Air D. Brass Answer: B
- What is the main difference between a compound and a mixture? A. A compound contains only one element B. In a compound the elements are chemically combined in a fixed proportion C. A mixture cannot be separated D. A compound has no fixed formula Answer: B
- Which substance is a mixture? A. Water B. Sodium chloride C. Air D. Carbon dioxide Answer: C
- An element is best described as a substance that: A. Contains two or more elements bonded together B. Is made of only one type of atom C. Can be separated by filtering D. Has variable composition Answer: B
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Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Phases and Classification of Matter
Describe the basic properties of each physical state of matter: solid, liquid, and gas
"Chemistry: Phases and Classification of Matter" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/1-2-phases-and-classification-of-matter. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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