Chemistry unit 1.1 key words

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Atom
The smallest part of an element which can still be recognised as an element
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Solid, gas, liquid
A state of matter
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Periodic table
An arrangement of elements in order of their atomic numbers forming groups and periods
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Groups in the periodic table
All elements in each column down the periodic table
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Compound
A substance made when two or more elements are chemically bonded together
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Proton
A tiny positive particle found in the nucleus of an atom
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Neutron
A dense particle found in the nucleus of no charge
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Electron
Tiny particle with negative charge that orbit the nucleus in shells
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Atomic number
The number of protons in an atom (top number)
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Mass number
Number of protons and neutrons in an atom (bottom number)
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Electronic structure
Writting down the number of electrons in each energy level
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Ionic bonds
The electrostatic force of attraction between two oppositely charged ions
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Covalent bonds
Chemical bonding through a pair of shared electrons with no new ions formed
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Products
New substances made in a reaction
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Reactants
Substances we start with in a reaction
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Other cards in this set

Card 2

Front

A state of matter

Back

Solid, gas, liquid

Card 3

Front

An arrangement of elements in order of their atomic numbers forming groups and periods

Back

Preview of the back of card 3

Card 4

Front

All elements in each column down the periodic table

Back

Preview of the back of card 4

Card 5

Front

A substance made when two or more elements are chemically bonded together

Back

Preview of the back of card 5
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