RADIOACTIVITY 1

Question 1

Marie Sklodowska Curie coined the term___________

to describe the new phenomenon observed by Antoine Henri Becquerel.

Answer 1

radioactivity

Question 2

becquerel was born in paris in what year?

Answer 2

1852

Question 3

This force governs how an unstable nucleus will decay into a stable nucleus

Answer 3

weak force

Question 4

It is the energy required to separate an atomic nucleus completely into its constituent protons and neutrons.

Answer 4

nuclear binding energy

Question 5

This process will change one nucleus to another if the product nucleus has a greater nuclear binding energy than the initial decaying nucleus.

Answer 5

radioacivity/radioactive decay

Question 6

This force attracts the protons to each other and counters the electromagnetic force.

Answer 6

strong force

Question 7

what year did becquerel began studying flourescence and phosphorescence

Answer 7

1883

Question 8

ability of a crystal to absorb light

Answer 8

phosphorescence

Question 9

what year did marie and pierre curie began to study the strange uranium rays

Answer 9

1898

Question 10

nobel prize on radioactivity

Answer 10

1903

Question 11

how many stable isotopes

Answer 11

270 stable isotopes

Question 12

all stable nuclei and known as?

Answer 12

radioactive nuclei

Question 13

true or false: nuclei are also unstable if they are excited

Answer 13

true

Question 14

nature seeks the lowest energy state

Answer 14

nuclear stability

Question 15

(n/p)

Answer 15

neutron to proton ratio

Question 16

true or false: the more protons packed together the more neutson are needed to bind

Answer 16

true

Question 17

true or false: nuclei with higher atomic numbers have more neutrons ro protons

Answer 17

true

Question 18

one of the simplest ways to predict the nuclear stability is based on whether a nucleus contains an odd/even numbers pf proton and neutrons

Answer 18

predicting nuclear stability

Question 19

true or false: nuclides contains odd # of both are least stable

Answer 19

true

Question 20

true or false: nuclides contains even # of both are most stable

Answer 20

true

Question 21

plot of number of neutron versus the number of protons

Answer 21

belt of stability

Question 22

produce power

Answer 22

nuclear reactors

Question 23

refers to the number of times radioactive decay occurs

Answer 23

decay rate

Question 24

bq means?

Answer 24

becquerel

Question 25

dps means?

Answer 25

disintergration per sec

Question 26

dpm means?

Answer 26

disintergration per min