Particle theory
10 flashcards to master Particle theory
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Describe diffusion in terms of kinetic particle theory.
Diffusion is the movement of particles from an area of high concentration to an area of low concentration due to their random motion. The rate of diffusion depends on factors like temperature and particle mass; higher temperature increases motion, lower mass increases diffusion.
How does relative molecular mass (Mr) affect the rate of diffusion of gases?
Gases with lower relative molecular mass (Mr) diffuse faster than gases with higher Mr. Lighter particles move faster at the same temperature.
Give an example of a greenhouse gas.
Examples of greenhouse gases include carbon dioxide (CO₂), methane (CH₄), water vapor (H₂O), and nitrous oxide (N₂O).
Name a compound that reacts with acid rain.
Calcium hydroxide (lime), calcium carbonate (limestone), or calcium oxide react with acid rain, neutralizing the acidic components.
What is the purpose of a catalytic converter?
Catalytic converters are used to reduce pollution by converting harmful gases, like carbon monoxide and nitrogen oxides, into less harmful substances, such as carbon dioxide and nitrogen.
What are the products of complete combustion?
Complete combustion of hydrocarbons produces carbon dioxide (CO₂) and water (H₂O).
Name the acid catalyst used for the creation of alkenes from alcohols.
Phosphoric acid (H₃PO₄) is a common catalyst used in the dehydration of alcohols to form alkenes.
Give two examples of alcohols that could be produced from hydration of butene.
Butan-1-ol and Butan-2-ol can be produced through the hydration of butene. They are isomers of Butanol.
Which gas reduces the oxygen-carrying capacity of blood?
Carbon monoxide reduces the oxygen-carrying capacity of the blood, potentially causing breathing problems, drowsiness, headaches, sickness, or even death.
Key Questions: Particle theory
Describe diffusion in terms of kinetic particle theory.
Diffusion is the movement of particles from an area of high concentration to an area of low concentration due to their random motion. The rate of diffusion depends on factors like temperature and particle mass; higher temperature increases motion, lower mass increases diffusion.
What is the purpose of a catalytic converter?
Catalytic converters are used to reduce pollution by converting harmful gases, like carbon monoxide and nitrogen oxides, into less harmful substances, such as carbon dioxide and nitrogen.
About Particle theory (1.2)
These 10 flashcards cover everything you need to know about Particle theory for your Cambridge IGCSE Chemistry (0620) exam. Each card is designed based on the official syllabus requirements.
What You'll Learn
- 2 Definitions - Key terms and their precise meanings that examiners expect
- 1 Key Concepts - Core ideas and principles from the 0620 syllabus
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After mastering Particle theory, explore these related topics:
- 1.1 Solids, liquids and gases - 12 flashcards
- 2.1 Elements, compounds and mixtures - 11 flashcards
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