Hormones: Plant Hormones 🌿 - GCSE Biolo...

In this episode, we will discuss the alveoli in the circulatory system.Alveoli are microscopic air sacs within the lungs where the crucial exchange of oxygen and carbon dioxide occurs between air and blood through diffusion. Their structure is highly adapted for this vital proces ... Show More

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

In this episode, we will discuss plant hormone uses and light investigation.Plant hormones are valuable tools in agriculture and horticulture, manipulating plant growth for various purposes. Auxins find use as herbicides and rooting agents, whilst ethene regulates fruit ripening. ... Show More

In this episode, we will discuss reaction pathways.Efficient chemical reactions are favoured for their cost-effectiveness and minimal waste generation, as highlighted by the concept of atom economy, which measures the proportion of reactants incorporated into desired products. Ho ... Show More

<p>In this episode, we delve into the history of the periodic table, exploring the contributions of John Newlands and Dmitri Mendeleev. Discover how the table evolved from organising elements by mass to its modern form based on atomic numbers.</p> <p>Don&#39;t miss out on subscri ... Show More

<p>Richard looks at yield for your GCSE Chemistry exam. In this episode, he will look at what yield is, how to calculate it and why it is never 100%. Ideal for preparing your <a href="http://bit.ly/2to1AEy">GCSE Chemistry</a> exam.</p> <p><a href="http://bit.ly/2to1AEy">Click her ... Show More

<p><strong>In this episode, we discuss fullerenes, which are a class of carbon molecules forming hollow structures</strong>, often with hexagonal rings alongside pentagonal or heptagonal ones. </p><p>The initial discovery, <strong>buckminsterfullerene (C60), is a spherical fuller ... Show More

In this episode, we talk about addition polymerisation.Addition polymerisation is a process where numerous short-chain monomers, specifically alkenes, combine to form a single long-chain polymer. This occurs because the carbon-carbon double bonds in the alkene monomers break, ena ... Show More

This episode outlines various origins of drinkable water. We identify fresh water as the simplest source to purify, requiring only filtering and sterilization. In contrast, seawater desalination is presented as the most energy-intensive and costly method. Finally, the text notes ... Show More

In this episode, we outline the essential stages of sewage treatment. Proper disposal of waste water is crucial for environmental protection. Initially, screening removes large debris, followed by sedimentation which separates solids (sludge) from liquid (effluent). Subsequently, ... Show More

In this episode, we discuss the key factors of rate of reaction.Several key factors influence how quickly chemical reactions proceed. Primarily, a higher concentration or pressure of reactants leads to more frequent collisions between particles, thereby accelerating the reaction ... Show More

In this episode, we talk about measuring pH.Determining the acidity or alkalinity of a substance, known as measuring pH, can be achieved through different methods. One approach involves using a universal indicator, which displays a spectrum of colours that correlate to specific p ... Show More