AQA · Chemistry · 8462
GCSE Chemistry: The periodic table
Atomic structure and the periodic table · AQA GCSE Chemistry (8462), specification point 4.1.2.1. Cards are generated from the exam board's own specification for "The periodic table", and every card links back to the page it came from. Specification © AQA — used with attribution.
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In what order are elements arranged in the periodic table?
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In order of increasing atomic (proton) number.
What is a group in the periodic table?
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A vertical column containing elements with similar properties.
Why is the periodic table called 'periodic'?
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Because similar properties occur at regular intervals (periodically) as atomic number increases.
Elements in the same group of the periodic table have the same number of electrons in their ? shell.
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outer
Why do elements in the same group have similar chemical properties?
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They have the same number of electrons in their outer shell, and outer electrons determine how an element reacts.
How does an element's atomic number relate to its position in the periodic table?
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Atomic number equals the number of electrons, whose arrangement in shells determines the element's period and group.
What can you predict about an element from its position in the periodic table?
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Its probable reactivity and the reactions it is likely to undergo.
The columns of the periodic table are known as ?.
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groups
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