English National Curriculum - Science Science

9. Explore Atomic Number and Mass Number

Mission Objectives

Use the atomic number and mass number to work out the number of protons, neutrons and electrons, in atoms of an element, isotopes, and ions

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Rocket Words Quiz

See if you know all the meanings of the rocket words

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Keywords

Words and meanings to learn

Frederick Soddy

A radiochemist who found out that radioactivity is due to element transmutation.

Marie Curie

A chemist and physicist who sought out information about radiation and discovered the elements radium and polonium.

lithium

Known as the symbol Li in the periodic table, the lightest solid element that is alkali.

isotope

Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.

aluminium

The chemical element of atomic number 13, a light silvery-grey metal.

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