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Chemistry > Chemical Bonding > Flashcards

Chemical Bonding Flashcards

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1
Q

Nucleus

A

Has positive protons and neutral neutrons

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2
Q

Electrons

A

Circle nucleus in shells

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3
Q

Atomic number

A

Number of protons in an atom

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4
Q

Mass number

A

Number o protons plus neutrons

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5
Q

Compound

A

When two or more atoms of different elements have a chemical bond joining them together

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6
Q

Octet rule

A

Atoms will bond together so that each atom attains an electron arrangement with 8 electrons in its outermost shell

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7
Q

Ionic bonding

A

Happens between metals and non metals

Give away or take an electron to fill their outer shell

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8
Q

Crystal lattice

A

Forms from ionic bonding

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9
Q

Examples of ionic bonding

A 
Sodium chloride (NaCl) 
Magnesium oxide (MgO)
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10
Q

Covalent bonding

A

When both atoms share electrons to get a full outer shell

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11
Q

What happens between positive and negative forces of ion

A

They attract each other

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12
Q

In ionic bonds positive and negative ions…

A

Are mixed together

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13
Q

Single covalent bonds

A

Occurs when atoms share one pair of electrons

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14
Q

Double covalent bonds

A

Formed when atoms share two pairs of electrons

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15
Q

Ion

A

Charged atom/charged group of atoms

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16
Q

Elements

A

Need to react to achieve full outer shells

17
Q

Ionic compound characteristics

A 
Positive and negative ions 
Solid at room temp
High melting and boiling points 
Soluble in water
Conduct electricity when melted or dissolved
18
Q

Covalent compound characteristics

A 
Consists of individual molocules
Liquid or gas at room temp
Low melting and boiling point 
Insoluble in water 
Do not conduct electricity
19
Q

How does a sodium atom change into a sodium ion

A

On losing an electron sodium becomes positively charged

It is now a sodium ion

20
Q

How does a chlorine atom change into a chlorine ion

A

On gaining an electron, chlorine atom changes Into a negatively charged ion

Chemistry (7 decks)

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