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[@freesciencelessons](/creator/youtube/freesciencelessons)
"GCSE Physics Revision "Required Practical 4: Current / PD Characteristics""  
[YouTube Link](https://youtube.com/watch?v=A1SyKvdHoqY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-03-15T21:27Z 915K followers, 710.2K engagements


"GCSE Physics Revision "Required Practical 1: Specific Heat Capacity""  
[YouTube Link](https://youtube.com/watch?v=HAPmwu7byGM) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-06-01T17:43Z 915K followers, 1.3M engagements


"A Level Biology Revision (Year 13) "Inhibitory Synapses""  
[YouTube Link](https://youtube.com/watch?v=C5F1tH0JPPA) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-01-26T16:01Z 915K followers, 18K engagements


"GCSE Physics Revision "Momentum""  
[YouTube Link](https://youtube.com/watch?v=ZtQhlwPxE28) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-03-02T20:14Z 915K followers, 525.1K engagements


"A Level Biology Revision "Using a Colorimeter to Quantify Glucose 1""  
[YouTube Link](https://youtube.com/watch?v=4p5la61R6X0) [@freesciencelessons](/creator/youtube/freesciencelessons) 2020-10-19T15:42Z 915K followers, 93.1K engagements


"GCSE Biology Revision "Osmosis""  
[YouTube Link](https://youtube.com/watch?v=qqe2NhQt8bY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-27T15:01Z 915K followers, 892.4K engagements


"A Level Chemistry Revision "Atomic Orbitals""  
[YouTube Link](https://youtube.com/watch?v=6jKTbT81jY8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2020-04-19T17:11Z 915K followers, 378.6K engagements


"GCSE Biology Revision "Cancer""  
[YouTube Link](https://youtube.com/watch?v=BLITE8uA4Tw) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-17T15:13Z 915K followers, 370K engagements


"GCSE Biology Revision "Animal Cells""  
[YouTube Link](https://youtube.com/watch?v=GuY0n7-zfds) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-07T19:19Z 915K followers, 1M engagements


"GCSE Biology Revision "Eukaryotes and Prokaryotes""  
[YouTube Link](https://youtube.com/watch?v=HBZcpzr5B2g) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-03T21:35Z 915K followers, 2.1M engagements


"A Level Biology Revision "The Structure of DNA and RNA""  
[YouTube Link](https://youtube.com/watch?v=HRga77i64nY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-07T12:00Z 915K followers, 156.6K engagements


"A Level Biology Revision "Haemoglobin and the Bohr Effect""  
[YouTube Link](https://youtube.com/watch?v=K1S7STZ2BrA) [@freesciencelessons](/creator/youtube/freesciencelessons) 2022-07-05T15:40Z 915K followers, 117.3K engagements


"GCSE Physics Revision "Uses of EM waves""  
[YouTube Link](https://youtube.com/watch?v=L0iivb-acqU) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-01-29T20:13Z 915K followers, 501.7K engagements


"GCSE Chemistry Revision "The Reactivity Series""  
[YouTube Link](https://youtube.com/watch?v=MDQr5QFVGkk) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-03-18T10:49Z 915K followers, 723K engagements


"A Level Biology Revision "The Structure of Enzymes""  
[YouTube Link](https://youtube.com/watch?v=MGcaSZ8KzFw) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-08-30T14:42Z 915K followers, 137.6K engagements


"GCSE Physics Revision "Efficiency""  
[YouTube Link](https://youtube.com/watch?v=NI5jaeBrIgQ) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-05-30T18:48Z 915K followers, 550.3K engagements


"GCSE Biology Revision "Effect of Temperature and pH on Enzymes""  
[YouTube Link](https://youtube.com/watch?v=Rfvh4LIsEEM) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-03T14:38Z 915K followers, 650.8K engagements


"GCSE Chemistry Revision "Charges on Ions""  
[YouTube Link](https://youtube.com/watch?v=V28_L3gteDo) [@freesciencelessons](/creator/youtube/freesciencelessons) 2016-12-28T13:01Z 915K followers, 448.2K engagements


"GCSE Chemistry Revision "Ionic Bonding 1: Ionic Bonding between Group X and Group 7""  
[YouTube Link](https://youtube.com/watch?v=XbDtmORzKO8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-03-28T11:08Z 915K followers, 131.7K engagements


"GCSE Chemistry Revision "Group X Part 1""  
[YouTube Link](https://youtube.com/watch?v=Z9U0728-fPY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-01-10T14:31Z 915K followers, 118.6K engagements


"GCSE Biology Revision "The Heart and Circulation""  
[YouTube Link](https://youtube.com/watch?v=bpYaKM2hVFY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-11T18:24Z 915K followers, 1.2M engagements


"GCSE Biology Revision "Required Practical 3: Effects of Osmosis on Plant Tissue""  
[YouTube Link](https://youtube.com/watch?v=ef2Ts2AKhq8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-27T21:28Z 915K followers, 1.1M engagements


"A Level Chemistry Revision "Shapes of Molecules""  
[YouTube Link](https://youtube.com/watch?v=lmPiydJfGrk) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-31T15:56Z 915K followers, 251.9K engagements


"GCSE Chemistry Revision "Covalent Bonding 1: Bonding in Hydrogen Chlorine and Hydrogen chloride""  
[YouTube Link](https://youtube.com/watch?v=m5u4STdFlOE) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-04-02T14:40Z 915K followers, 106.7K engagements


"A Level Biology Revision "The Effect of Substrate Concentration and Enzyme Concentration on Enzymes""  
[YouTube Link](https://youtube.com/watch?v=w6GZUhaR3II) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-09-10T12:00Z 915K followers, 75.6K engagements


"GCSE Physics Revision "Transverse and Longitudinal Waves""  
[YouTube Link](https://youtube.com/watch?v=0f5iYCNCnow) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-01-12T21:51Z 915K followers, 1.1M engagements


"A Level Biology Revision "Testing for Starch Protein and Lipids""  
[YouTube Link](https://youtube.com/watch?v=1agWPmxsuf4) [@freesciencelessons](/creator/youtube/freesciencelessons) 2020-10-17T17:26Z 915K followers, 76.5K engagements


"GCSE Physics Revision "Internal Energy""  
[YouTube Link](https://youtube.com/watch?v=5WVT5NR0iLA) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-07-31T15:49Z 915K followers, 475.2K engagements


"GCSE Physics Revision "Static Electricity (Triple)""  
[YouTube Link](https://youtube.com/watch?v=5obbfXg_MH4) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-07-10T20:37Z 915K followers, 415.2K engagements


"A Level Chemistry Revision (Year 13) "Electrophilic Substitution in Benzene""  
[YouTube Link](https://youtube.com/watch?v=77xJ0s2uxXg) [@freesciencelessons](/creator/youtube/freesciencelessons) 2023-10-04T09:50Z 915K followers, 30.6K engagements


"GCSE Physics Revision "Energy Transfers: Bungee Jumper""  
[YouTube Link](https://youtube.com/watch?v=7ZlTNAUNFts) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-05-30T08:47Z 915K followers, 454.4K engagements


"GCSE Chemistry Revision "Required Practical 1: Making Soluble Salts""  
[YouTube Link](https://youtube.com/watch?v=9GH95172Js8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-04-11T10:37Z 915K followers, 1.3M engagements


"A Level Chemistry Revision "Electron Configuration""  
[YouTube Link](https://youtube.com/watch?v=9ogq50CBgCg) [@freesciencelessons](/creator/youtube/freesciencelessons) 2020-04-19T17:11Z 915K followers, 282.5K engagements


"GCSE Chemistry Revision "Calculating Percentage Yield 2" (Triple)"  
[YouTube Link](https://youtube.com/watch?v=A3ndfwX5lyI) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-02-21T22:32Z 915K followers, 211.5K engagements


"A Level Chemistry Revision "Covalent Bonding and Expansion of the Octet""  
[YouTube Link](https://youtube.com/watch?v=ACIhhP0rL4Y) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-29T16:54Z 915K followers, 121.5K engagements


"GCSE Biology Revision "Bacterial Division" (Triple)"  
[YouTube Link](https://youtube.com/watch?v=AZZLKPGQHMI) [@Freesciencelessons](/creator/youtube/Freesciencelessons) 2017-08-21T21:27Z 915K followers, 429.4K engagements


"A Level Chemistry Revision "Dative Covalent Bonding""  
[YouTube Link](https://youtube.com/watch?v=B-W_ic1eubA) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-30T16:30Z 915K followers, 194.3K engagements


"GCSE Physics Revision "Current in Series Circuits""  
[YouTube Link](https://youtube.com/watch?v=CEBfn4ndQWI) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-06-08T16:20Z 915K followers, 1.3M engagements


"GCSE Chemistry Revision "Crude oil and Hydrocarbons""  
[YouTube Link](https://youtube.com/watch?v=CX2IYWggEBc) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-11-12T11:15Z 915K followers, 1.2M engagements


"GCSE Biology Revision "Surface Area to Volume Ratio""  
[YouTube Link](https://youtube.com/watch?v=DHGWH3NdAjc) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-27T13:23Z 915K followers, 550.1K engagements


"A Level Biology Revision "The Fluid-Mosaic Model of Membrane Structure""  
[YouTube Link](https://youtube.com/watch?v=EJaGonrfEow) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-09-26T12:06Z 915K followers, 173.8K engagements


"GCSE Biology Revision "Sexual and Asexual Reproduction""  
[YouTube Link](https://youtube.com/watch?v=Fh9b6a-3DLQ) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-03-20T18:25Z 915K followers, 773K engagements


"GCSE Biology Revision "Required Practical 7: Reaction Time""  
[YouTube Link](https://youtube.com/watch?v=Fm02i4vEi5Q) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-04-20T21:03Z 915K followers, 705.1K engagements


"GCSE Physics Revision "Specific Heat Capacity""  
[YouTube Link](https://youtube.com/watch?v=Hs5x0-IU2F4) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-05-18T20:14Z 915K followers, 1.2M engagements


"GCSE Biology Revision "Cell division by Mitosis""  
[YouTube Link](https://youtube.com/watch?v=I0VdEiPWkHs) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-20T20:57Z 915K followers, 1.5M engagements


"GCSE Biology Revision "Required Practical 5: Effect of pH on Amylase""  
[YouTube Link](https://youtube.com/watch?v=JyXXoevEWc8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-03T19:42Z 915K followers, 1.1M engagements


"GCSE Physics Revision "Convex Lenses" (Triple)"  
[YouTube Link](https://youtube.com/watch?v=KNUcS4NaqDw) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-01-30T22:24Z 915K followers, 337.9K engagements


"GCSE Chemistry Revision "Reaction of Metals with Oxygen""  
[YouTube Link](https://youtube.com/watch?v=Lk1V0buHEFs) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-03-16T21:26Z 915K followers, 805.1K engagements


"GCSE Chemistry Revision "Extraction of Metals""  
[YouTube Link](https://youtube.com/watch?v=MXTSels6e2Y) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-04-03T21:46Z 915K followers, 635.8K engagements


"GCSE Chemistry Revision "Group X Part 2""  
[YouTube Link](https://youtube.com/watch?v=PxdVHydF_U4) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-01-11T16:08Z 915K followers, 93.4K engagements


"GCSE Biology Revision "Required Practical 4: Food Tests""  
[YouTube Link](https://youtube.com/watch?v=SqWTJWOBww4) [@freesciencelessons](/creator/youtube/freesciencelessons) 2020-09-01T14:17Z 915K followers, 802.2K engagements


"GCSE Biology Revision "DNA and the Genome""  
[YouTube Link](https://youtube.com/watch?v=TQ_iCf8mzMA) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-03-21T21:25Z 915K followers, 604.2K engagements


"GCSE Biology Revision "Animal Cell Specialisation""  
[YouTube Link](https://youtube.com/watch?v=UZwT-Jx8LzY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-08-20T12:42Z 915K followers, 1M engagements


"A Level Chemistry Revision "Giant Covalent Structures and Simple Molecular Structures""  
[YouTube Link](https://youtube.com/watch?v=WAA08FzArw8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2022-11-14T10:38Z 915K followers, 56.6K engagements


"A Level Chemistry Revision (Year 13) "Bromination of Benzene""  
[YouTube Link](https://youtube.com/watch?v=WVwiozCzTX0) [@freesciencelessons](/creator/youtube/freesciencelessons) 2023-10-09T15:29Z 915K followers, 17.5K engagements


"GCSE Physics Revision "Potential Difference in Series Circuits""  
[YouTube Link](https://youtube.com/watch?v=YAzyHRusOS0) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-06-11T17:32Z 915K followers, 783.8K engagements


"GCSE Chemistry Revision "Electrolysis of Aluminium Oxide""  
[YouTube Link](https://youtube.com/watch?v=YcyMElBEzAY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-05-04T20:55Z 915K followers, 842.4K engagements


"GCSE Physics Revision "Required Practical 3: Resistance""  
[YouTube Link](https://youtube.com/watch?v=YsZeZotYVag) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-06-26T21:54Z 915K followers, 754.3K engagements


"A Level Biology Revision "ATP""  
[YouTube Link](https://youtube.com/watch?v=_CLPB-H_f_k) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-22T12:00Z 915K followers, 89.5K engagements


"GCSE Biology Revision "Gas Exchange in the Lungs""  
[YouTube Link](https://youtube.com/watch?v=aPUPfzsqDgs) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-14T16:51Z 915K followers, 641K engagements


"GCSE Chemistry Revision "Graphene and Fullerenes""  
[YouTube Link](https://youtube.com/watch?v=cjgODRJU79Y) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-04-11T17:28Z 915K followers, 96.5K engagements


"A Level Biology Revision (Year 13) "The Chi-Squared Test""  
[YouTube Link](https://youtube.com/watch?v=ctoqnk_1FnU) [@Freesciencelessons](/creator/youtube/Freesciencelessons) 2025-03-19T18:28Z 915K followers, 10.2K engagements


"GCSE Physics Revision "Atomic Structure""  
[YouTube Link](https://youtube.com/watch?v=dftq9xGXcf8) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-07-13T19:58Z 915K followers, 789.5K engagements


"A Level Biology Revision "DNA Replication""  
[YouTube Link](https://youtube.com/watch?v=eRAGWeEoOXc) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-01-11T09:18Z 915K followers, 189.1K engagements


"GCSE Physics Revision "Energy Transfer by Appliances""  
[YouTube Link](https://youtube.com/watch?v=gj1tu8bTKjI) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-07-01T14:22Z 915K followers, 472.1K engagements


"GCSE Chemistry Revision "Acids Reacting with Metals 2""  
[YouTube Link](https://youtube.com/watch?v=iA4mk3CTkmI) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-04-09T12:59Z 915K followers, 347.5K engagements


"GCSE Physics Revision "The National Grid""  
[YouTube Link](https://youtube.com/watch?v=iNvGiTn64fQ) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-07-05T17:08Z 915K followers, 422.6K engagements


"GCSE Chemistry Revision "Graphite""  
[YouTube Link](https://youtube.com/watch?v=iPoPeYHctPs) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-04-10T10:52Z 915K followers, 77.4K engagements


"GCSE Physics Revision "Required Practical 6: Stretching a Spring""  
[YouTube Link](https://youtube.com/watch?v=jQAt3e6Bz7U) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-02-13T14:26Z 915K followers, 767.9K engagements


"GCSE Physics Revision "The Alternator and Dynamo" (Triple)"  
[YouTube Link](https://youtube.com/watch?v=k1IivkRjd1U) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-03-23T21:15Z 915K followers, 419.3K engagements


"A Level Biology Revision "Cell Division by Meiosis""  
[YouTube Link](https://youtube.com/watch?v=mc4ZMhgDGKU) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-11-23T14:02Z 915K followers, 206.3K engagements


"GCSE Chemistry Revision "Elements Compounds and Mixtures""  
[YouTube Link](https://youtube.com/watch?v=nUzOXy9V-K0) [@freesciencelessons](/creator/youtube/freesciencelessons) 2023-09-29T12:17Z 915K followers, 467.7K engagements


"GCSE Biology Revision "The Blood""  
[YouTube Link](https://youtube.com/watch?v=nc_kbfjhiUo) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-09-11T21:46Z 915K followers, 491.6K engagements


"GCSE Chemistry Revision "Acids Reacting with Metals""  
[YouTube Link](https://youtube.com/watch?v=ofw6oHSYGFI) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-04-09T10:45Z 915K followers, 558.2K engagements


"GCSE Physics Revision "Renewable Sources of Energy""  
[YouTube Link](https://youtube.com/watch?v=pqzvUur7QRw) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-06-06T21:50Z 915K followers, 455.4K engagements


"GCSE Physics Revision "Acceleration""  
[YouTube Link](https://youtube.com/watch?v=r5iXzDCRMsE) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-02-19T20:53Z 915K followers, 535.4K engagements


"GCSE Chemistry Revision "NPK Fertilisers" (Triple)"  
[YouTube Link](https://youtube.com/watch?v=rKzt9BvvEeQ) [@Freesciencelessons](/creator/youtube/Freesciencelessons) 2018-01-11T21:09Z 915K followers, 279.9K engagements


"A Level Chemistry Revision "Oxidation Numbers""  
[YouTube Link](https://youtube.com/watch?v=sX1JYZwJL7w) [@freesciencelessons](/creator/youtube/freesciencelessons) 2021-06-14T08:07Z 915K followers, 122.1K engagements


"GCSE Biology Revision "Vaccination""  
[YouTube Link](https://youtube.com/watch?v=uPeZBhJYlnU) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-10-03T19:14Z 915K followers, 439.8K engagements


"GCSE Biology Revision "Antibiotics""  
[YouTube Link](https://youtube.com/watch?v=uQt5bRIkD4g) [@freesciencelessons](/creator/youtube/freesciencelessons) 2017-10-03T21:10Z 915K followers, 349.4K engagements


"GCSE Chemistry Revision "Properties of Small Covalent Molecules""  
[YouTube Link](https://youtube.com/watch?v=u_KR0UaZFkY) [@freesciencelessons](/creator/youtube/freesciencelessons) 2024-04-10T08:39Z 915K followers, 75.9K engagements


"GCSE Physics Revision "Contact and Non-contact Forces""  
[YouTube Link](https://youtube.com/watch?v=xxK8N23nx9M) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-02-12T20:50Z 915K followers, 626K engagements


"GCSE Biology Revision "Required Practical 9: Sampling Organisms""  
[YouTube Link](https://youtube.com/watch?v=yLHz2Ea10Mg) [@freesciencelessons](/creator/youtube/freesciencelessons) 2018-05-02T20:42Z 915K followers, 635.9K engagements