Nuclear Chemistry

Question 1

Most stable atoms? With np ration of 1?

Answer 1

First 20

Question 2

What is radioisotope?

Answer 2

Elements with unstable nuclei

Question 3

Isotope?

Answer 3

Atoms that have same number of protons but diff num of neutrons

Question 4

Three isotopes for hydrogen

Answer 4

Hydrogen-1, detrerium-2, tritium-3

Question 5

What does atomic number tell you?

Answer 5

Number of protons

Question 6

What does mass number tell you?

Answer 6

How many protons and neutrons

Question 7

Give mass number charge, and symbol for the 4 types of emission

Answer 7

Beta(-)= -ie, -1 charge, 0 mass
Beta(+)= +ie, +1 charge, 0 mass
Alpha= 4/2He, +2 charge, 4 mass
Gamma=¥

Question 8

Penetrating power of beta(+)?

Answer 8

100 times

Question 9

Penetration power of beta(-)?

Answer 9

100 times

Question 10

Penetration power of gamma?

Answer 10

10,000

Question 11

Penetrating power for alpha?

Answer 11

1

Question 12

What happens when beta(+) is emmited?

Answer 12

Proton splits into neutron and a beta particle is let off.

Question 13

What happens when beta(-) is emmited?

Answer 13

Neutron splits into proton and electron, election is let off.

Question 14

Diff between chemical and nuclear reactions?

Answer 14

Nuclear reactions have 1 million times more energy.

Question 15

What is Geiger counter?

Answer 15

Device used to measure radioactivity

Question 16

Diff between nuclear fission and fusion?

Answer 16

Fission= splitting neutrons into smaller pieces
Fusion= combining two nuclei to make larger piece

Question 17

What is transmutation?

Answer 17

Changing one element into another

Question 18

What are transuranium elements?

Answer 18

Atomic # > uranium

Question 19

Type of reactions occur in the sun?

Answer 19

Hydrogen fusion?

Question 20

Explain carbon 14 dating

Answer 20

Plants take in carbon 14 and 12 in the form of carbon dioxide through photosynthesis. Animals eat the plants and absorb the carbon. When the animal die, scientist compare the ration to the atmosphere.

Question 21

Used for nuclear chemistry?

Answer 21

Radiation for cancer, radiotracers to study areas of the body, nuclear weapons and energy

Question 22

How can you tell when a alpha particle be let off?

Answer 22

Atomic # bigger than 84

Question 23

When will beta(-) be let off?

Answer 23

Np ration over 1.

Question 24

When can you tell if beta(+)?

Answer 24

Np ration under 1

Question 25

What makes a atom unstable?

Answer 25

N/p ratio