Chemistry Unit 1 - The Periodic Table - Atoms - Compounds

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How many groups are in the Periodic Table?
The Periodic Table has 8 groups. These are based on elements reacting in similar ways.
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What are the [three] sub-atomic particles that make up an atom?
Protons (charge +1 mass +1) Electrons (charge -1 mass 0) Neutrons (charge 0 mass +1)
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What is the charge of an atom?
The charge of an ATOM is neutral (0) -> this means that the number of protons is the same as the number of electrons
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How do you find out the mass number?
Number of protons + number of neutrons (e.g. carbon (6 + 6 = 12))
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How do you find out the number of neutrons?
Mass number - number of protons (e.g. carbon (12 - 6 = 6))
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In the Periodic Table, what does the horizontal row tell you?
A horizontal row in the Periodic Table is a period.
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In the Periodic Table, what does the vertical column tell you?
The vertical column contains elements with similar reactivities. This is a group.
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Each shell on an atom can contain up to how many shells?
First shell - 2 Second Shell - 8 Third Shell - 18
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What is the name for all elements in group 0?
The elements in group 0 are all NOBLE GASES - this means they have a stable electron arrangement and have a full outer shell.
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Explain the formation of a compound.
A compound is formed when two or more different elements combine together.
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Other cards in this set

Card 2

Front

What are the [three] sub-atomic particles that make up an atom?

Back

Protons (charge +1 mass +1) Electrons (charge -1 mass 0) Neutrons (charge 0 mass +1)

Card 3

Front

What is the charge of an atom?

Back

Preview of the front of card 3

Card 4

Front

How do you find out the mass number?

Back

Preview of the front of card 4

Card 5

Front

How do you find out the number of neutrons?

Back

Preview of the front of card 5
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