Armando Hasudungan Chemistry Flashcards

1
Q

What is a homogeneous mixture?

A

A homogeneous mixture is one in which all the species are of the same type. (ie all liquids in a solution).

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2
Q

What is a heterogeneous mixture?

A

A heterogeneous mixture is one in which the species are of physically distinct states (ie like a rock in water).

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3
Q

What is Avogadro’s number?

A

6.022 x 10^23

Number of molecules/atoms in a mole.

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4
Q

What is the only metal that is not solid at RTP?

A

Mercury is a liquid at RTP.

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5
Q

What is group one also known as?

A

Group one is known as the alkaline metals.

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6
Q

What is group two known as?

A

Group two is known as the alkaline earth metals.

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7
Q

What is the trend as you move right and up the periodic table?

A
  • increasing ionisation energy
  • increasing magnitude of electron affinity
  • increasing electronegativity
  • decreasing atomic radius
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8
Q

What is Heisenburg’s uncertainty principle?

A

We cannot know simultaneously both the position and momentum of any particle

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9
Q

What are the different quantum numbers?

A
  • principle quantum number
  • Azimithal quantum number
  • magnetic quantum number
  • spin quantum number
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10
Q

What letters represent the principle quantum number?

A

n represents the principle quantum number.

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11
Q

What letters represent the Azimithal quantum number?

A

l represents the Azimithal quantum number

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12
Q

What letters represent the magnetic quantum number?

A

ml represents the magnetic quantum number.

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13
Q

What letters represent the spin quantum number?

A

ms represents the spin quantum number.

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14
Q

What is the principle quantum number?

A

The energy of an electron in an atom.

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15
Q

So what is the principle quantum number representing?

A

The principle quantum number tells us which electron shell the electron will be found in.

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16
Q

What is the Azimithal quantum number?

A

Distinguishes between orbitals of a given (n) having different shapes.

17
Q

So what does the Azimithal quantum number represent?

A

The Azimithal quantum number tells us the specific subshell.

18
Q

What is the magnetic quantum number?

A

Distinguishes orbitals of given energies (n) & shape (l) by having different orientations in space.
(tells us the number of each type of orbital)

19
Q

What is the spin quantum number?

A

The electrons occupying an orbital can either have spin up or spin down. And so only two electrons max can fit in each orbital.

20
Q

How many electrons can the s subshell hold?

A

2

21
Q

How many electrons can the p subshell hold?

A

6

22
Q

How many electrons can the d subshell hold?

A

10

23
Q

How many electrons can the f subshell hold?

A

14

24
Q

What is Hund’s rule?

A

The lowest energy arrangement of electrons in a subshell is obtained by putting electrons into separate orbitals of the subshell with the same spin before pairing electrons.

25
Q

What is a dipole-dipole interaction?

A

An attraction between partial charges of polar molecules (electronegativity).