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Alkali Metals
Witness the exciting reactions that occur when alkali metals come into contact with other substances. What does this tell us about their properties? Chemistry - Periodic Table - Learning Points. The alkali metals make up Group 1 of the...
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The Noble Gases
The noble gases were one of the last groups of elements to be discovered. From helium balloons to light bulbs, these gases have many uses in the world around us. Chemistry - Periodic Table - Learning Points. The noble gases are found in...
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Reactivity Series: Reactive Metals
The discovery and uses of reactive metals throughout history, and how their uses have defined the period in which they were discovered. Chemistry - Periodic Table - Learning Points. The reactivity series ranks the chemical reactivity of...
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Transition Metals
Transition metals are the largest group in the periodic table. Find out what similarities they share, and how we make use of these metals. Chemistry - Periodic Table - Learning Points. Transition metals are found as a block in the middle...
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Reactivity Series: Comparing the Reactivity of Group 1 and Group 2 Metals
We compare the reactivity of Group 1 and Group 2 metals. We add sodium and then potassium to water. We observe the reactions. Next we add magnesium and then calcium to hydrochloric acid and observe the reactions. The results let us put...
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Atomic Structure
What does the Periodic Table tell us about the elements, their properties and behaviours? And why does the atomic number define each element? Chemistry - Periodic Table - Learning Points. The structure of the atom reveals why the...
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The Halogens
Halogens are hazardous to human life, yet they can also be very useful. How do they react when they meet other elements? Chemistry - Periodic Table - Learning Points. The halogens are the elements in Group 7 of the periodic table. The...
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Attempts of elements classification: The fundamentals of the periodic table
By the end of this learning object, the student will be able to: recognize the fundamentals of the periodic table.14977
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Attempts of elements classification: Dmitrii Mendeleev
By the end of this learning object, the student will be able to: Recognize the efforts and attempts of some scientist to classify elements.4430
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The Periodic Table Song (2019 Update!)
Learn every element of the Periodic Table with The Periodic Table Song by KLT!
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Electronegativity Periodic Trend - Using the Periodic Table to help determine electronegativity!
Electronegativity is the tendency of an atom to gain an electron. The way I think about it is like tug of war. The stronger an atom can pull in an electron, the higher it’s electronegativity will be. The trend for electronegativity is...
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What in the world is IONIZATION ENERGY?!?
Ionization energy is the amount of energy it takes to remove an electron. The stronger the nucleus can hold on to the electron, the more energy that will be needed to remove the electron. The trend for ionization energy is that it...
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Periodic Trend - Atomic Size (Radius) Explained!
The periodic trend for atomic size is that the size of the atom gets bigger as you go down the periodic table and from right to left across the periodic table. This trend is sometimes referred to as atomic radius as there is a direct...
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Why Is The Periodic Table Arranged The Way It Is?
The periodic table is arranged by atomic number, which is the number of protons in an element’s nucleus. The elements are arranged in order of increasing atomic number. The periodic table is also arranged by groups and periods. The...
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What Are Valence Electrons And How To Find Them?
Valence electrons are the electrons that are located in the outermost shell of an atom. In other words, these are the electrons that can be gained or lost during a chemical reaction. In order to determine the number of valence electrons...
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GCSE Physics - Nuclear Decay Equations #34
This video covers: - What alpha, beta and gamma radiation are - How to write decay equations for them General info: - Suitable for all GCSE and IGCSE courses - Suitable for higher and foundation tiers - Suitable for triple and combined...
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GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass #2
This video covers: 0:16 - What an element is 2:23 - What isotopes are 3:37 - How to calculate relative atomic mass This video is suitable for: - All tiers - All exam boards - Triple and combined science
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GCSE Chemistry - Electron Arrangement #8
This video covers: 0:43 - The number of electrons per energy level 4:24 - why atoms react / why they lose or gain electrons This video is suitable for: - All tiers - All exam boards - Triple and combined science
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GCSE Chemistry - Group 1 Alkali Metals #11
What are alkali metals? Why are they so reactive? What are the trends as you go down the group? How do they react with water, oxygen and chlorine? Learn all this and more!
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GCSE Chemistry - Metals and Non-Metals #10
This video covers the difference between the properties of metals and non-metals, and takes a look at transition metals.
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GCSE Chemistry - Modern Periodic Table #9
Learn who made the periodic table, why he arranged the elements this way and about the important groups you need to know.
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The Alkaline Earth Metals Song Periodic Table
Learn about the Alkaline Earth Metals of the periodic table with the Alkaline Earth Metals Song Periodic Table by KLT
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Post-transition Metals Song Periodic Table
Learn about the Periodic Tables Post-transition Metals with Post-transition Metals Song Periodic Table by KLT.
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Lanthanide Metals Song Periodic Table
Learn about the Lanthanide elements of the periodic table with Lanthanide Metals Song Periodic Table by KLT Download the KLT App