Transition Elements
Muhtasari
In the wide central block of the periodic table sit the transition elements, the familiar everyday metals such as iron, copper, nickel and chromium. They are the metals we build with, wire our homes with and shape into tools, and they bring a distinctive set of properties that set them apart from the reactive metals of Groups I and II.
In this lesson you will learn the characteristic properties of the transition elements: their high densities and melting points, their coloured compounds, their use as catalysts, and the way they form ions with more than one charge, such as iron(II) and iron(III).
Malengo
- Describe the transition elements as metals that: (a) have high densities (b) have high melting points (c) form coloured compounds (d) often act as catalysts as elements and in compounds.
- [Supplement] Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III).
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Transition Elements. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Which is a typical property of a transition element? A. Low melting point B. White compounds only C. High density D. Very reactive with water Answer: C
- Transition elements often act as: A. Insulators B. Catalysts C. Non-metals D. Noble gases Answer: B
- Which pair of ions shows the variable oxidation numbers of iron? A. Fe+ and Fe2+ B. Fe2+ and Fe3+ C. Fe3+ and Fe4+ D. Fe and Fe2+ Answer: B
- Compared with Group I metals, transition elements are: A. Softer and more reactive B. Harder and less reactive C. Lighter and more reactive D. Lower melting Answer: B
- Transition metal compounds are usually: A. Colourless B. White C. Coloured D. Gaseous Answer: C
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Transition Elements? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
