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C1 part 1 C1 Lesson 2 Atomic Structure
Year 9

Learning outcomes and Specification referenceEdit

C1.1.1 C1 Lesson 1 Atomic Structure
a All substances are made of atoms. Know that substances are made of atoms. State that substances made of only one sort of atom are called elements.
b Atoms are represented by symbols. Know that elements are found in the periodic table and that groups contain elements with similar properties. State where metals and non-metals appear in the Periodic table.
c Atoms have a small central nucleus, of protons and neutrons, surrounded by electrons. Know that symbols represent atoms of different elements.
d The relative electrical charges are as shown: Proton +1, Neutron no charge, Electron -1. Know the structure of an atom.
e In an atom, the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. Know the charges on sub-atomic particles.
f All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons. Use the periodic table to work out the number of each type of sub-atomic particle for a named atom.
g The number of protons in an atom of an element is its atomic number. The sum of the protons and neutrons in an atom is its mass number.

Full Specification TextEdit

a) All substances are made of atoms. A substance that is made of only one sort of atom is called an element. There are about 100 different elements. Elements are shown in the periodic table. The groups contain elements with similar properties.
b) Atoms of each element are represented by a chemical symbol, eg O represents an atom of oxygen, and Na represents an atom of sodium.
c) Atoms have a small central nucleus, which is made up of protons and neutrons and around which there are electrons.
d) The relative electrical charges are as shown: Proton +1, Neutron 0, Electron –1
e) In an atom, the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge.
f) All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons.
g) The number of protons in an atom of an element is its atomic number. The sum of the protons and neutrons in an atom is its mass number.

Starter ActivitiesEdit

Activities to introduce new ideaEdit

Activities to practice applying new knowledgeEdit

Practical activitiesEdit

DemonstrationsEdit

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LinksEdit

http://www.creative-chemistry.org.uk/

References to lessons and resources in commercial schemesEdit

Nelson ThornesEdit

OUPEdit

Harper CollinsEdit

Longman/PearsonEdit

HodderEdit

Atom and hands machine drawing

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