This video explains how to draw covalent molecules and compounds.
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This video explains how to draw ionic bonding of sodium chloride and magnesium oxide.
0:42 Drawing NaCl Ionic Bond
4:04 Drawing MgO Ionic Bond
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This video explains how to find percentage mass of element in a compound. The percent composition of an element can be found out using the formula given in the video. To use the formula, first you are required to work out ...
http://www.sciencetutorial4u.com This video covers atomic structure for students studying for GCSE core science and additional science chemistry.
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This progress test video provides the basic revision needed for GCSE science on DNA, Chromosomes and genes.
# Teaching video on DNA, Chromosomes, Genes & Alleles:
The questions in the video a...
Fertility treatment and IVF are explained in this video for student revising for GCSE science exam. Please refer to these timings for:
# Decreasing Fertility 1:01
# Increasing Fertility 3:48
# IVF 4:35
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If question is given in percentage rather than in mass, then simply convert the percentage sign into mass, for example:
2.4% of C will be 2.4g of C and
0.8% of H will be 0.8g of H and then you can follow the 5 normal steps to find the empirical formula...
http://www.sciencetutorial4u.com WAVES Part 2, GCSE PHYSICS SCIENCE.
WAVES PART 1 VIDEO:https://youtu.be/CHnKkPVhCcE
There are two types of waves; TRANSVERSE and LONGITUDINAL WAVES. Transverse waves vibrate PERPENDICULAR to the direction of the wave. L...
Basic Menstrual Cycle and the 4 stages , GCSE SCIENCE BIOLOGY.
1) Is menstrual cycle actually 28 days? 0:22
2) The 4 stages of menstrual cycle. 0:41
3) Why does the cycle repeat again? 2:47
HORMONES Part 2, TEST and GCSE science revision. Progress test and revision on endocrine glands, hormones and their functions.
If you first want to watch my teaching videos on hormones, then click the links below:
HORMONES Part 1, https://youtu.be/Pk__h...
HORMONES Part 2, GCSE BIOLOGY SCIENCE. I am covering the main glands in the endocrine system and the hormones produced by these glands. The function of these hormones are also explained. The keywords covered in this video are FSH, LH, Oestrogen, Insulin,...
Hormones Part 1, TEST and GCSE SCIENCE REVISION. Progress test and revision on hormones or endocrine system.
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HORMONES Part 1, GCSE BIOLOGY SCIENCE. This video covers the basic of hormones (Endocrine System). After watching this video, you will be able to define chemical messenger, gland, target cells and receptors.
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Nervous system part 2, TEST and GCSE SCIENCE REVISION. Progress test and revision on SYNAPSES and REFLEXES.
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If you first want to watch my teaching video on synap...
The Nervous System Part 2, GCSE BIOLOGY SCIENCE.
If you have missed my first part of video on nervous system, then click the link here: https://youtu.be/00NKbdp5-Z4
Synapses and reflexes are found in AQA, EDEXCEL and OCR ...
The Nervous System Part 1, TEST and GCSE REVISION.
if you need to learn the basic nervous system before doing the test, then watch my teaching video on Nervous System Part 1 by clicking the link below:
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The Nervous System, Part 1. GCSE BIOLOGY Science. Needed for AQA, OCR and EDEXCEL Biology. These keywords are explained in this video; CNS, sense organs, stimulus, receptors, sensory, relay, motor neurones, effectors and r...
How to Balance Cracking Equations.
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Just remember, in a cracking equation, the reactant is a long alkane and the two products are smaller alkane and alkene molecules. By usin...
Cracking Hydrocarbons part 2, TEST and GCSE SCIENCE REVISION. These are expected by all three exam boards which are AQA, EDEXCEL and OCR.
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"Son of ...