Properties Of Metals
Gbogbo ọrọ náà
Metals share a recognisable set of properties: they conduct heat and electricity, can be hammered into shape and drawn into wires, and usually have high melting points. These shared traits, and the chemical reactions metals undergo, explain why metals are so useful and how reactive each one is.
In this lesson you will compare the physical properties of metals and non-metals, then study the general chemical reactions of metals with dilute acids, with cold water and steam, and with oxygen. Together these build a clear picture of how metals behave and why their reactivity differs.
Ebumnobi
- Compare the general physical properties of metals and non-metals, including: (a) thermal conductivity (b) electrical conductivity (c) malleability and ductility (d) melting points and boiling points.
- Describe the general chemical properties of metals, limited to their reactions with: (a) dilute acids (b) cold water and steam (c) oxygen.
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Akwụkwọ Ọmụmụ
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Properties Of Metals. 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 property is typical of a metal but not a non-metal? A. Poor electrical conductivity B. Being brittle C. Being malleable and ductile D. Low melting point Answer: C
- When a metal reacts with a dilute acid, the products are: A. A salt and water B. A salt and hydrogen C. A salt and oxygen D. An oxide only Answer: B
- Which gas is produced when sodium reacts with cold water? A. Oxygen B. Carbon dioxide C. Hydrogen D. Chlorine Answer: C
- A moderately reactive metal such as magnesium reacts with steam to form: A. The metal hydroxide and oxygen B. The metal oxide and hydrogen C. The metal chloride and hydrogen D. The metal only Answer: B
- Which metal does NOT react with dilute hydrochloric acid? A. Magnesium B. Zinc C. Iron D. Copper Answer: D
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The Periodic Table
State the periodic law and explain the organization of elements in the periodic table
"Chemistry: The Periodic Table" 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/2-5-the-periodic-table. 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 Properties Of Metals? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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