What this topic covers
Topic 6: Groups in the periodic table has 1 subtopic:
- The periodic table
← Back to topics
GCSE Edexcel Foundation Chemistry · Topic 6 of 9
Topic 6: Groups in the periodic table – GCSE Edexcel Foundation Chemistry revision notes
Choose a subtopic. Compare the properties and reactions of Group 1, Group 7, and Group 0 elements. 7 lessons in 1 subtopic.
Revise Topic 6: Groups in the periodic table for GCSE Edexcel Foundation Chemistry, including The periodic table. 7 lessons across 1 subtopic.
7
Lessons
1
Subtopics
Topic 6: Groups in the periodic table lessons by subtopic
7 lessons, grouped by subtopic.
The periodic table
More in this course
Go back to the full GCSE Edexcel Foundation Chemistry topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is Topic 6: Groups in the periodic table?
Compare the properties and reactions of Group 1, Group 7, and Group 0 elements. 7 lessons in 1 subtopic.
What are the noble gases?
The noble gases are the Group 0 elements helium, neon, argon, krypton, xenon and radon. The Trends in Noble Gas Properties notes cover this in full.
What are halogens?
Halogens are the elements in Group 7 of the periodic table, including fluorine, chlorine, bromine, iodine and astatine. The Introduction to Group 7 Halogens notes cover this in full.
What are the properties of alkali metals?
Alkali metals are soft enough to cut with a knife, have low melting points compared to other metals and have low density; lithium, sodium and potassium float on water. The Introduction to Group 1 Elements - The Alkali Metals notes cover this in full.
Why are noble gases unreactive?
Noble gases are unreactive because their atoms have stable arrangements of electrons with complete outer shells, so they do not need to gain, lose or share electrons. The Noble Gases: Structure and Unreactivity notes cover this in full.
What happens when potassium reacts with water?
When potassium reacts with water, it fizzes violently, catches fire immediately with a purple flame and moves very fast. The Introduction to Group 1 Elements - The Alkali Metals notes cover this in full.
What is a halide?
A halide is an ionic compound formed when a halogen reacts with a metal, with the halogen as a negative ion such as Cl⁻, Br⁻ or I⁻. The Introduction to Group 7 Halogens notes cover this in full.
What happens when lithium reacts with water?
When lithium reacts with water, it fizzes gently, moves slowly across the water surface and dissolves. The Introduction to Group 1 Elements - The Alkali Metals notes cover this in full.
Why does reactivity decrease down Group 7?
Reactivity decreases down Group 7 because the atoms get bigger and heavier, so the outer shell is less close to the nucleus and attracts electrons less strongly. The Trends in Group 7 Properties notes cover this in full.