Energy levels and waves continued

Question 1

Medium

Answer 1

The medium of a wave is the substance the wave travels through.

Question 2

Speed of waves in lesser/more dense objects

Answer 2

Waves generally travel slower in more dense substances and faster in less dense substances.

Question 3

Speed of waves in different phases

Answer 3

Waves generally travel faster when the particles of a substance are closer together and slower when the particles are farther apart.

Question 4

Phase and wave speed

Answer 4

1. Solid-closest-fastest
2. Liquid-farther-slower
3. Gas-farthest-slowest

Question 5

Waves in stretched objects travel faster when:

Answer 5

1. The density of an object is less dense

2. The object is pulled tighter

Question 6

Waves in unstretched objects travel faster when

Answer 6

1. The density of the object is less dense

2. The stiffness of the object is more stiff

Question 7

Coulomb’s law trends

Answer 7

1. The electrostatic force is stronger when there is more charge
2. The electrostatic force is weaker when there is a bigger distance between the charges

Question 8

The number of energy levels and pull of protons

Answer 8

1. The more energy levels an atom has, the farther the outermost electrons are from the protons, and the weaker the pull o the protons on the outermost electrons.
2. The more protons an atom has, the stronger the pull of protons on the outermost electrons

Question 9

Left to right in the same row and number of protons

Answer 9

Energy levels stay the same, but the elements on the right pull stronger because there are more protons.

Question 10

How elements in the same column compare

Answer 10

As you go from top to bottom the energy level increases and more energy levels mean the outermost electrons are farther from the protons. At the bottom of the column, the elements pull weaker on their outermost electrons.

Question 11

Atomic radius

Answer 11

The atomic radius of an atom is the average distance of the outermost electrons from the nucleus.

Question 12

Electronegativity

Answer 12

The electronegativity of an atom is how strongly an atom attracts other atoms’ electrons.

Question 13

Ionization energy

Answer 13

The ionization energy of an atom is the smallest amount of energy needed to completely remove one electron from the atom.

Question 14

Metals

Answer 14

Metals are atoms that hold onto their outermost electrons loosely.

Question 15

How more energy levels affect properties

Answer 15

Pull-on electrons- weaker 
Atomic radius-bigger 
Electronegativity- lower 
Ionization energy- lower 
Metallicity- more

Question 16

How fewer energy levels affect properties

Answer 16

Pull-on electrons- stronger 
Atomic radius- smaller 
Electronegativity- higher 
Ionization energy- higher 
Metallicity-less

Question 17

How more protons affect properties

Answer 17

Pull-on electrons- tighter 
Atomic radius- smaller 
Electronegativity- higher 
Ionization energy- higher 
Metallicity- less

Question 18

How fewer protons affect properties

Answer 18

Pull-on electrons- looser 
Atomic radius- bigger 
Electronegativity- lower 
Ionization energy- lower 
Metallicity- more