Unit One Flashcards

1
Q

What is a neutralisation reaction

A

When a base reacts with an acid to form water and a salt

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2
Q

What is the definition of spectator ions

A

Ions that remain unchanged by the reactions

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3
Q

What are alkaline solutions

A

Bases that can dissolve in water
Metal oxide+ water -> metal hydroxide

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4
Q

What has a higher OH- concentration

A

Alkaline above 7

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5
Q

What has a higher H+ concentration

A

Acids below 7

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6
Q

What is a neutral solution

A

Has equal H+ and OH-

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7
Q

What are ions that contain more than one type of atom called

A

Group ions

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8
Q

What is an ionic compound

A

When an atom loses or gains electrons to obtain the stable electron arrangement

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9
Q

How are ionic bonds described

A

They are the electrostatic attraction between positive and negative ions

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10
Q

Properties of ionic compounds

A

Soluble in water
High mp and bp
Only conduct when in molten or in solution

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11
Q

Properties of covalent molecules

A

Low mp and bp
Not conductive
Strong covalent bonds within the molecule and only weak attractions between the molecules

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12
Q

Different shapes of covalent bonding

A

Linear
Angular Bent
Pyramidal
Tetrahedral

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13
Q

What is a covalent bond

A

A bond between two non metal atoms

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14
Q

When does a covalent bond form

A

When two positive nuclei are held together by their common attraction for a shared pair of electrons

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15
Q

What are isotopes

A

Atoms with the same atomic number but different mass numbers

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