All of AQA CHEMISTRY Paper 2 in 25 minutes - GCSE Science Revision

Created from Youtube video: https://www.youtube.com/watch?v=e7ynWcVkE4svideo

Concepts covered:AQA Chemistry, rates of reaction, organic compounds, Haber process, chemical analysis

The video provides a comprehensive overview of AQA Chemistry Paper 2, covering topics such as rates of reaction, organic chemistry, atmospheric chemistry, and resource usage. It includes detailed explanations of key concepts like reversible reactions, organic compounds, chemical analysis, and the Haber process, offering practical examples and experiments to aid understanding.

Table of Contents1.Understanding Le Chatelier's Principle in Chemical Equilibrium 2.Understanding Polymer Formation and Types 3.Potable Water and Sustainable Resource Management

chapter

Understanding Le Chatelier's Principle in Chemical Equilibrium

Concepts covered:Le Chatelier's Principle, equilibrium, pressure, temperature, endothermic reaction

Le Chatelier's Principle explains how a system at equilibrium responds to changes in pressure, concentration, and temperature. Increasing pressure favors the forward reaction by shifting equilibrium to the right, while temperature changes affect endothermic and exothermic reactions differently, with higher temperatures favoring endothermic reactions.

Question 1

Increasing pressure favors the forward reaction in equilibrium.

Question 2

How does temperature affect endothermic reactions?

Question 3

In a closed system, equilibrium is reached when reaction rates are _____.

Question 4

CASE STUDY: A chemical plant is optimizing the Haber process to increase ammonia production. They decide to increase the pressure in the reaction chamber.

What effect does increased pressure have?

Question 5

Higher temperature favors the endothermic reaction in equilibrium.

Question 6

What occurs in a closed system at equilibrium?

Question 7

Increasing pressure favors the _____ reaction in a gaseous system.

Question 8

CASE STUDY: A laboratory experiment involves a reversible reaction with an exothermic forward reaction. The temperature is increased to observe changes.

What happens when temperature is increased?

Question 9

In a closed system, equilibrium means no net change occurs.

Question 10

What happens when pressure increases in equilibrium?

Question 11

A higher temperature favors the _____ reaction in a system.

chapter

Understanding Polymer Formation and Types

Concepts covered:polymers, monomers, addition polymerization, condensation polymerization, functional groups

The chapter explains the formation of polymers, which are long-chain alkanes made from repeating monomer units through processes like addition and condensation polymerization. It highlights examples such as polyethene from ethene, polyesters from alcohols and carboxylic acids, and natural polymers like proteins, DNA, and starch, emphasizing the role of functional groups and monomers in these reactions.

Question 12

Polyethene is formed through addition polymerization of ethene.

Question 13

What forms the backbone of DNA structure?

Question 14

The process of joining monomers with double bonds is called _____.

Question 15

CASE STUDY: A research team is studying the properties of proteins and their formation from amino acids. They aim to synthesize a new protein with specific properties.

What is crucial for synthesizing the protein?

Question 16

CASE STUDY: An environmental organization is creating educational materials on natural polymers. They want to highlight examples of natural polymers and their monomers.

Select three correct natural polymer examples.

Question 17

Condensation polymerization produces water as a byproduct.

Question 18

What is required for addition polymerization?

Question 19

Proteins are polymers made from _____.

Question 20

CASE STUDY: A company is developing a new biodegradable plastic using condensation polymerization. They are considering using a combination of an alcohol and a carboxylic acid with functional groups on both ends.

What should the company consider for polymerization?

Question 21

DNA is made from a single polymer chain.

Question 22

How is a polyester formed?

Question 23

DNA is composed of four different monomers called _____.

chapter

Potable Water and Sustainable Resource Management

Concepts covered:potable water, desalination, sustainability, metal extraction, life cycle assessment

The chapter discusses the importance of potable water and the processes involved in making water safe to drink, such as filtration, sterilization, and desalination. It also covers the sustainable use of natural resources, including metal extraction and recycling, emphasizing the need for life cycle assessments to minimize environmental impact.

Question 24

Desalination requires a significant amount of energy.

Question 25

How can we reduce environmental impact of metals?

Question 26

Potable water is made safe by using chlorine, ozone, or _____.

Question 27

CASE STUDY: A coastal city is facing a severe water shortage. The local government is considering desalination to provide potable water to its residents. However, they are concerned about the high energy consumption involved in the process.

What should the city prioritize to reduce energy use?

Question 28

CASE STUDY: A startup is developing a new product and wants to ensure it is environmentally sustainable. They are conducting a Life Cycle Assessment (LCA) to evaluate the product's impact.

Select three key LCA considerations for sustainability.

Question 29

Pure water is safe to drink in large amounts.

Question 30

What is the purpose of life cycle assessment?

Question 31

The process of removing salt from seawater is called _____.

Question 32

CASE STUDY: A manufacturing company is evaluating its waste management practices. They produce a significant amount of wastewater and are looking to improve their treatment processes to minimize environmental impact.

What should the company implement for better wastewater treatment?

Question 33

Sustainability involves not compromising future generations' needs.

Question 34

Why is pure water dangerous to drink?

Question 35

The treatment of sludge involves the process of _____.

Question 36

Life Cycle Assessment evaluates a product's environmental impact.

Question 37

What is the main challenge of desalination?

Question 38

Sustainability ensures resources for future generations without compromising _____.

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