Nuclear Chemistry

Question 1

beta emmions is a ____ of an electron

Answer 1

loss

Question 2

for beta emission, the atomic number goes ____

Answer 2

up by 1

Question 3

for an alpha emission, the mass number ___

Answer 3

goes down by 4

Question 4

for an alpha emission, the atomic number ____

Answer 4

goes down by 2

Question 5

for beta emission, the mass number ___

Answer 5

is unchanged

Question 6

what is nucleosynthesis and where does it occur

Answer 6

the process of making the elements, it tends to happen in stars

Question 7

what can nuclear reactions be written as

Answer 7

initial (incoming, outgoing) final

Question 8

what is nuclear fusion

Answer 8

when two or more nuclei react to form one or more different atomic nuclei

Question 9

what is a positron , write the chemical formula for it

Answer 9

0, +1 B +

• this is the anti particle of the electron.

Question 10

what is the symbol for a neutrino

Answer 10

V

Question 11

where does the proton-proton chain occur

Answer 11

in the sun (stars)

Question 12

brief description of the process in which the proton-proton chain mechanism is involved

Answer 12

4 hydrogen nuclei (protons) are fused together to give 1 helium nucleus

Question 13

what’s the largest molecule that can be made from older and larger stars ?

Answer 13

iron

Question 14

what does D stand for

Answer 14

deuterium, which is 2H

Question 15

what is the most stable nucleus

Answer 15

56Fe

Question 16

how do you form elements that are heavier than 56Fe

Answer 16

supernova, we need extra energy to do this as its no longer an exothermic process