Chapter 4-5 Flashcards Preview

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Flashcards in Chapter 4-5 Deck (27)
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1
Q

Atomic radii

A
Size
AR
As you go down a group increases 
Across a period decreases 
Cations are smaller than original atom
Anions are bigger
2
Q

Ionization energy

A

IE
Energy required to take away an election
Down a group ie decreases
A cross a period ie increases

3
Q

Electron affinity

A

Amount of energy required to add an electron

4
Q

Electronegativity

A
Amount of attraction an atom has for an electron in a chemical bond 
Increase across a period
Decrease down a group
F has highest en value
Closer to f greater the en value
5
Q

Dobriener

A

Grouped elements in for ups of 3
Called the triads
Famous triad: cl br I

6
Q

Newlands

A

Grouped elements in groups of 8
Called this rule “law of octaves”
Scientists grouped based on how they reacted

7
Q

Dmirri Mendeleev

A

Discovered periodic table

Placed elements in groups by si solar properties

8
Q

Henry Moseley

A

Discovered periodic law

9
Q

Periodic law

A

The physical and chemical properties of the elements are periodic functions of their atomic numbers

10
Q

S orbitals

A

Holds 2 electrons

11
Q

P orbitals

A

6 electrons

12
Q

D orbital

A

10 electrons

13
Q

F orbital

A

14 electrons

14
Q

Electromagnetic radiation

A

A form of energy that’s exhibits wave like behavior as it travels through space

15
Q

Electromagnetic spectrum

A

All the forms of electromagnetic spectrum

16
Q

Visible light

A

400-700

17
Q

Wavelength h ( upside down y )

A

Distance between corresponding pts on adjacent waves

18
Q

1 meter =

A

10^9 nanometers

19
Q

Frequency ( v )

A

Number of waves that pass a given point in a given amount of time
Hertz

20
Q

Photlectric effect

A

The emission of electrons from a metal when a light source shines on the metal

21
Q

A certain violet light has a wavelength of …… What is its energy?

A

6.626x10^-34(2.998x10^8)/ wavelength

22
Q

Determine the energy of light with a frequency

A

6.626x10^-34( frequency )

23
Q

Determine the frequency of light with a wavelength of…..

A

2.998x10^8/ wavelength

24
Q

4 types of periodic properties

A

Atomic radius
Ionization energy
Electron affinity
Electro negativity

25
Q

Determine the wavelength of a light with a frequency ….

A

2.998x10^8/ frequency

26
Q

frequency of light with energy…

A

energy/ 6.626x10^-34

27
Q

Explain the difference between precision and accuracy

A

P is the closeness of two or more measurements ago each other
A is how close a measurement is to an accepted value