Chemistry additional chapter 1

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What are ions?
Ions are electrically charged particles formed when atoms lose or gain electrons.
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Which atoms usually gain electrons to form negative ions?
Non-metal
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Which atoms usually gain electrons to form positivie ions?
Metals
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What ionic bonding?
Ionic bonding is when atoms lose or gain an electron to form charged particles which are then strongly attracted to each other
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What do metal atoms do?
Lose the electron(s), in their highest energy level and become positively charged ion
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What do non-metal atoms do?
Gain an electron, from another atom to become negatively charged ions
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When you lose an atom what ion sign are you?
A plus (+0
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When you gain an atom what ion sign are you?
A minus (-)
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What are atoms that have lost or gained an electron called?
Ions
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What are ionic bonds between?
A metal and non metal
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Do elements from group 7 form positive ions or negative ions?
Positive (lose electrons)
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Do elements from group 1 form negative ions or negative ions?
Negative (gain electrons)
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Sodium chloride has a giant ionic structure. Does it have a high or low boiling point?
Low boiling point
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What is the atomic number?
Is the number of protons
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What is the mass number?
Total of protons and neutrons
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Explain what is meant by the term isotope
They are different atomic forms of the same element, which have the same number of protons but a different number of neutrons
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Name to types of isotopes
Carbon 12 and Carbon 14
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Give three properties of ionic bodning
1. High melting and boiling points due to the s
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Why do ionic bonds have a high melting and boiling point?
Due to stong electrostatic forces between the oppositely ions
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Explain why giant ionic structures such as magnesium fluoride don't melt easily
Because, there are strong electrostatic forces between ion, so a large amount of energy is needed to overcome these forces
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When can ionic bonds conduct electricity?
When molten or dissolved in water
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What happens when ionic bonds are molten or dissolved in water?
The ions are free to move and they carry an electric current. Which allows them to conduct electricity
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How are ionic bond held together?
They are held together by strong electrostatic forces between oppositely charged ions
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What is a covalent bond?
Is a strong bond between two non-metal atoms. It consists of a shared pair of electrons.
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What are covalent bonds between?
Metal and non-metals
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Other cards in this set

Card 2

Front

Which atoms usually gain electrons to form negative ions?

Back

Non-metal

Card 3

Front

Which atoms usually gain electrons to form positivie ions?

Back

Preview of the front of card 3

Card 4

Front

What ionic bonding?

Back

Preview of the front of card 4

Card 5

Front

What do metal atoms do?

Back

Preview of the front of card 5
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