C1 1 Fundamental Ideas

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  • Created by: chloe.lwt
  • Created on: 17-03-16 20:01
What are atoms made of?
Atoms have a nucleus which contains protons and neutrons. This nucleus is surrounded by electrons.
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What are elements and how are they arranged in the periodic table?
An element is one type of atom. They are arranged on the periodic table in groups and periods. The elements in the same group often have similar properties.
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What is a compound?
Compounds are formed when two or more elements chemically combine together.
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What are the charges of the subatomic particles?
Protons have a positive charge. Neutrons have a neutral charge and electrons have a negative charge meaning they are attracted to the nucleus.
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What is the overall charge of an atom?
An atom has no overall charge as there are equal numbers of positively charged protons and negatively charged electrons. Neutrons exist to prevent protons from repelling against each other in the nucleus.
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What is the atomic number of an element?
The atomic number tells us how many protons an element has. All atoms of the same element have the same atomic number. Elements are arranged in ascending atomic number in the periodic table.
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What is the mass number?
The mass number is the number of particles in the nucleus . It is the protons and the neutrons added together.
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How are electrons arranged?
Electrons are arranged on different energy levels which become full when they contain a certain amount of electrons. Electrons occupy the lowest possible energy level.
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What does the electronic structure of an electron tell us?
The electronic structure of an atom tells us how many electrons are on each level.
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What is similar about the atoms in the same group?
They contain the same number of electrons on their highest level.
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How is an ion formed?
Ions form when a positively charged metal and a negatively charged non-metal react.
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What happens during ionic bonding?
During ionic bonding, non-metals gain electrons and become negatively charges and metal atoms lose electrons and become positively charged. These oppeositely charged ions attract each other and the formuale tells us the simplest ration of atoms in th
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When are covalent bonds formed?
Covalent bonds are formed when two non-metals react and one or more electron s are shared.
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What is the difference between symbol and word equations?
Word equations give names whereas symbol equations give names, number and type.
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Why and how are symbol equations balanced?
In symbol equations the number and type of atom should be the same on both sides as atoms aren't created or destroyed. In chemical reactions the reactants rearrange to form the products so the mass of each side of the equation is the same.
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Card 2

Front

What are elements and how are they arranged in the periodic table?

Back

An element is one type of atom. They are arranged on the periodic table in groups and periods. The elements in the same group often have similar properties.

Card 3

Front

What is a compound?

Back

Preview of the front of card 3

Card 4

Front

What are the charges of the subatomic particles?

Back

Preview of the front of card 4

Card 5

Front

What is the overall charge of an atom?

Back

Preview of the front of card 5
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