Elements, Compounds And Mixtures
Gbogbo ọrọ náà
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.
Ebumnobi
- [Core] Describe the differences between elements, compounds and mixtures
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Elements, Compounds And Mixtures. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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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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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Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Elements, Compounds And Mixtures? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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