When atoms get together Flashcards

1
Q

What are molecules?

A

It’s when 2 or more atoms, (the same or different) combine.

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2
Q

Elements combine to make ________.

A

Compounds.

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3
Q

Show 2H2+O2=2H2O

A

O=Hydrogen
o=oxygen
OO+ oo=OoO
OO OoO

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4
Q

Compounds are made of atoms held together by what?

A

Chemical Bonds.

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5
Q

What quest are atoms on?

A

They all want to be like noble gases.

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6
Q

Why do atoms want to be like noble gases?

A

To feel full, so they will lose or gain electrons

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7
Q

What is the Octet rule?

A

2,8,8,2

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8
Q

What is a duet rule?

A

They only need 2 electrons to be complete.

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9
Q

What 2 atoms follow the duet rule?

A

Hydrogen and helium.

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10
Q

What are ionic bonds?

A

Bonds that form with metals and non metals, (usually)/elements from the opposite sides of the staircase.

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11
Q

Anion=____ _____ _____

A

Negative charged ion

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12
Q

Cation=____ ____ ____

A

Positive charged ion

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13
Q

What will determine if an atom will lose or gain some electrons? and explain the exception.

A

What’s easier to do will determine it. But group 4 is in the middle so it can do both give and receive 4, depending on what’s around.

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14
Q

Ionic bonds have a saying, what is it?

A

“Opposites attract”

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15
Q

Positive ionic bonds are the result of _____ ______ attracting each other as electrons are “swapped”.

A

Electrostatic charges.

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16
Q

What does dissociate mean?

A

Break up.

17
Q

What type of bonds dissociate in water?

A

Positive ionic bonds

18
Q

Why do positive ionic bonds make for excellent electrolytes?

A

Because they break up in water, (they conduct electricity)

19
Q

What are polyatomic ions?

A

2 or more chemically bonded atoms that have become electrically charged.

20
Q

Common Polyatomic Ions: (NH4)+

A

Ammonium

21
Q

Common Polyatomic Ions: (CO3)2-

A

Carbonate

22
Q

Common Polyatomic Ions: (OH)-

A

Hydroxide

23
Q

Common Polyatomic Ions: (NO3)-

A

Nitrate

24
Q

Common Polyatomic Ions: (PO4)3-

A

Phosphate

25
Q

Common Polyatomic Ions: (SO4)2-

A

Sulphate

26
Q

What is the acroym for polyatomic ions?

A

Nick the Camel Ate a Pheonix for Supper

27
Q

For ex =Nitrate

A

Nick=NO3 Nick so:(NO3)-

28
Q

For ex=Phosphate

A

Pheonix=PO4 Pheonix so:(PO4)3-

29
Q

What are covalent bonds?

A

The atoms need each other, (true relationship)

30
Q

How do covalent bonds get their octet?

A

It works by sharing some of their valence electrons instead of giving them up.

31
Q

What type of bond is it if the atoms are on the same side of the stair case?

A

Covalent bond.

32
Q

What type of bond is it if the atoms are on opposite sides of the stair case?

A

Ionic bond.