Fundamental Ideas in Chemistry

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  • Created by: Izzy1999
  • Created on: 09-06-14 18:07
What is an element?
An element is a substance that is made from only one type of atom.
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What are the horizontal rows called in the period table?
Periods
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What are the vertical columns called in the period table?
Groups
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What are substances made from?
All substances are made from tiny particles called atoms.
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What are electrons, protons and neutrons called?
Sub-atomic particles.
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What are the electrical charges for electrons, protons and neutrons?
Proton are +1, neutron are 0, electrons are -1
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The number of electrons in an atom is equal to the number of protons in its nucleus.
This means atoms have no overall charge.
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What is the atomic number?
The number of protons in atom.
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What is the mass number of an atom?
The total number of protons and neutrons it contains.
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Other cards in this set

Card 2

Front

What are the horizontal rows called in the period table?

Back

Periods

Card 3

Front

What are the vertical columns called in the period table?

Back

Preview of the front of card 3

Card 4

Front

What are substances made from?

Back

Preview of the front of card 4

Card 5

Front

What are electrons, protons and neutrons called?

Back

Preview of the front of card 5
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