logo
episode-header-image
Jun 2025
5m 49s

Identifying Ions: Halides 🧪 GCSE Chemis...

Seneca Learning
About this episode

This episode discusses how to identify halides.

To identify halide ions, in a solution, a two-step process is employed. 

First, dilute nitric acid is added to eliminate any carbonate ions that could interfere with the subsequent test.

Following this, silver nitrate is introduced. The presence of halide ions is indicated by the formation of a precipitate; silver chloride appears white, silver bromide is cream-coloured, and silver iodide presents pale yellow. 

These observations allow for the identification of the specific halide anion present.

Don't miss out on subscribing for more educational content tailored to help you succeed in your exams. Perfect for AQA, OCR, Edexcel, CIE and WJEC exam boards.

⁠Click here to see all of our GCSE Chemistry content!

Up next
Jul 29
The Haber Process & NPK Fertilisers: Nitrogen, Phosphorus and Potassium🌱 GCSE Chemistry Learning & Revision
This episode details the key ingredients in fertilisers: nitrogen, phosphorus, and potassium. It outlines the chemical production of nitrogen-based fertilisers, specifically ammonium nitrate, highlighting its rich nitrogen content due to its dual sources. We explain that phosphat ... Show More
5m 7s
Jul 28
The Haber Process & NPK Fertilisers: Plants and Nitrogen 🌱 GCSE Chemistry Learning & Revision
In this episode, we look at plants and nitrogen.Plants require nitrogen to produce proteins necessary for growth. While the atmosphere is full of nitrogen gas, plants cannot directly utilise this form. Instead, they absorb soluble nitrates from the soil. Crop harvesting depletes ... Show More
5m 2s
Jul 23
Using the Earth's Resources: Overexploitation and Alternative Extraction Methods ⛏️ GCSE Chemistry Learning & Revision
In this episode, we discuss overexploitation and alternative extraction methods. Historical overuse of copper-rich ores has led to a scarcity of these resources. As a result, scientists have developed alternative methods to obtain copper from less concentrated sources. Phytominin ... Show More
4m 21s
Recommended Episodes
Sep 26
Organic Chemistry Mechanisms To Know
In this episode, Sam Smith will discuss and help you understand the essential organic chemistry mechanisms and reactions you may encounter when taking the MCAT. From nucleophilic substitution reactions like SN1 and SN2 to aldol condensation and oxidation and reduction of alcohols ... Show More
15m 37s
Jan 2025
Infection & Response: Fungi🤒 GCSE Biology Learning & Revision
In this episode, Jamie explores the intriguing nature of fungi, including their structure and how they spread, with a focus on the fungal disease rose black spot. Discover how this disease affects plants and the approaches to managing its impact. Don't miss out on subscribing ... Show More
1m 31s
Jan 2025
Infection & Response: Protists🤒 GCSE Biology Learning & Revision
In this episode, Jamie investigates the role of protists as single-celled, eukaryotic parasites and how they cause diseases such as malaria. Learn how protists interact with vectors and the severe impacts they can have on their hosts. Don't miss out on subscribing for more ed ... Show More
1m 21s
Jan 2025
Infection & Response: Causing Diseases 🤒 GCSE Biology Learning & Revision
In this episode, Jamie explains how infectious diseases spread through direct contact, contaminated water, and airborne droplets. Discover how these methods facilitate the transmission of illnesses such as Athlete's foot, cholera, and the flu. Don't miss out on subscribin ... Show More
1m 40s
Feb 2020
Human Nervous System: Thermoregulation 🌡 - GCSE Biology Learning & Revision
Liz looks at thermoregulation for your GCSE Biology exam. In this episode, she will look at how the changes to body temperature are detected and what the responses to these temperature changes are. Liz looks at the role of receptors and blood vessels in thermoregulation. Perfect ... Show More
3m 51s
Jun 2025
Transport in Cells: Transport in Cells 🧬 GCSE Biology Learning & Revision
In this episode, we look at transportation in cells. We will explain how substances move into and out of cells, highlighting three key mechanisms. Diffusion is described as the movement of particles from high to low concentration areas. Osmosis is presented as a specific type of ... Show More
4m 59s
Mar 2025
Infection & Response: Drug Discovery 💊 GCSE Biology Learning & Revision
This episode explores the historical shift in drug discovery from natural sources to synthetic production. Initially, many essential medicines like Digitalis and Aspirin were derived directly from plants, highlighting the importance of botanical resources. A pivotal moment was th ... Show More
4m 54s
Jan 2025
Infection & Response: Preventing Infection🤒 GCSE Biology Learning & Revision
In this episode, Jamie discusses the vital strategies to prevent the spread of infections, including maintaining hygiene, isolating infected individuals, safeguarding against vectors, and the importance of vaccination. Tune in to learn how these measures effectively help reduce i ... Show More
2m 9s
Apr 2025
Photosynthesis: Photosynthesis in Farming 🌿 GCSE Biology Learning & Revision
This episode focuses on the role of photosynthesis in greenhouse farming. It highlights how lighting and heating can be manipulated to boost photosynthetic rates, thus increasing crop yield. However, farmers face a crucial economic decision because artificial lighting and heating ... Show More
3m 40s