This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Haya hapa majibu ya maswali yako: 2. State two characteristics of particles in: a) Solids Chembe zimepangwa kwa karibu na hutetemeka katika nafasi zisizobadilika. b) Liquids Chembe ziko karibu lakini zinaweza kusogea zikipishana, huchukua umbo la chombo. c) Gases Chembe zimetawanyika mbali na husogea ovyoovyo na haraka, hujaza chombo. 3. Explain the effect of impurities on: a) Boiling point Uchafu huongeza kiwango cha kuchemka. b) Melting point Uchafu hupunguza kiwango cha kuyeyuka. 4. State whether each of the following changes is physical or chemical. Melting ice: Mabadiliko ya kimwili* Rusting iron: Mabadiliko ya kikemikali* Burning paper: Mabadiliko ya kikemikali* Dissolving sugar in water: Mabadiliko ya kimwili* Cooking an egg: Mabadiliko ya kikemikali* 5. Differentiate between a physical change and a chemical change. Mabadiliko ya kimwili hayazalishi dutu mpya na yanaweza kurejeshwa. Mabadiliko ya kikemikali huzalisha dutu mpya na hayawezi kurejeshwa. 6. Complete the table below. | Change of State | Process | | :-------------- | :------ | | Solid → Liquid | Kuyeyuka | | Liquid → Gas | Uvukizaji | | Gas → Liquid | Ufupishaji | | Liquid → Solid | Kuganda | 1. Name the components of the fire triangle. a) Joto b) Nishati (Fuel) c) Oksijeni 2. State four causes of fire in nature. a) Radi b) Mlipuko wa volkano c) Msuguano (k.m., mawe) d) Kujiwasha (Spontaneous combustion) kwa mimea kavu Tuma swali linalofuata 📸