Question

B

Answer 1

@Vocaloid

Answer 2

not a bad guess but there's a phenomenon that's a bit more specific

it states that the frequency of light emitted is related to its temperature

any ideas what this might be?

Answer 3

A

Answer 4

oh...

Answer 5

sorry

Answer 6

i think I have the concepts a bit mixed up

Answer 7

it's alright haha

blackbody radiation is a bit more specific to this scenario

Answer 8

so there's a property of EM waves they experience when they interact constructively or destructively, do you remember what it's called? starts with an i

Answer 9

C

Answer 10

good

Answer 11

C

Answer 12

I mean A

Answer 13

can't be a because there's no gamma ray

notice how nucleus is being split into two nucleii with smaller masses

Answer 14

fission

Answer 15

A+ so nuclear fission is the better answer

Answer 16

D

Answer 17

good

Answer 18

a

Answer 19

well done

Answer 20

D

Answer 21

good

Answer 22

B

Answer 23

good

Answer 24

A

Answer 25

good

Answer 26

Fusion?

Answer 27

I'm not 100% sure but my search seems to agree with fusion as well

Answer 28

D

Answer 29

that's a true statement but there's one that's a bit more specific and relevant to resolving the ultraviolet catastrophe and understanding how blackbody radiation really works

if you remember, light was proposed to be quantized, which better matches the choice..?

Answer 30

C

Answer 31

good

Answer 32

A

Answer 33

A+ well done

Answer 34

well you can start with proton-proton. which force(s) act between protons? electrostatic force, strong nuclear force, or both?

Answer 35

Nuclear and electrostatic ?

Answer 36

good, and in a stable atom, which one is stronger? strong nuclear or electrostatic?

Answer 37

um eletrostatic

Answer 38

strong nuclear has to be stronger since it holds the atom together

what about proton-neutron? electrostatic, strong nuclear, or both?

Answer 39

nuclear

Answer 40

awesome

and finally what about neutron-neutron?

Answer 41

nuclear?

Answer 42

actualy electrostatic

Answer 43

has to be nuclear, electrostatic only applies between charged forces

and that's it, make sure to include what force(s) are present, which one is stronger (if there's more than one force) and whether the force is attractive or repulsive

Answer 44

for proton proton would the nuclear force be stronger?

Answer 45

yes

Answer 46

They would be repulsive?

Answer 47

nuclear force is attractive

Answer 48

A+

Answer 49

so any ideas? if the number of neutrons increases the space between protons increases, do you think that would make the nucleus more or less stable?

Answer 50

less

Answer 51

hm. well if there's more space the electrostatic repulsion becomes weaker (more space between protons) so the nucleus becomes more stable

Answer 52

so we've already covered electrostatic force + stability, what do you think happens to the strong nuclear force?

Answer 53

stability decreases

Answer 54

there's more space between protons, which means the stability goes up due to the decreased repulsion between protons

the strong nuclear force, which also occurs between protons and neutrons, increases due to the increased number of neutrons

Answer 55

any ideas where the mass in a nuclear fusion/fission reaction goes? hint: E = mc^2

Answer 56

what does the E in E = mc^2 stand for?

Answer 57

mass and energy

Answer 58

and how they are the same

Answer 59

so mass times speed of light

Answer 60

good so the mass in a nuclear reaction gets converted to energy

Answer 61

so is that why the starting mass is greater?

Answer 62

yes

Answer 63

well mass number and charge are simple enough from the formula

Answer 64

for penetrating power you just need to remember/look up whether they have high or low penetrating power

Answer 65

top # is mass # and bottom # is charge

Answer 66

4 atomic mass units, 2 protons and 2 neutrons

Answer 67

good so what's the charge?

Answer 68

2

Answer 69

good, +2

and if you recall from earlier the alpha particle has low penetrating power (compared to beta particles and gamma rays)

Answer 70

I got the 210 and 86

Answer 71

awesome, then you just gotta look at the bottom # and see which element abbreviation to use

Answer 72

Rn

Answer 73

good so add Rn to the right of your two numbers

Answer 74

good but if you can get the formatting to work try to make it look more like the 41 21 Sc atom where the element abbreviation is big and takes up two lines

(if you can't get it to work exactly it's alright)

Answer 75

GOt it thank you !