Radioactive Decay

Types of Radiation

100

The 4 types of radioactive decay

Alpha, Beta (Electron/Beta negative), Beta positive (positron), Gamma

200

Gamma radiation is made up of

Just energy, no particles

300

Alpha decay is made up of.

2 protons and 2 neutrons

400

Beta positive decay occurs when

A proton turns into a neutron and shoots out a positively charged electron

500

Beta negative decay occurs when

A neutron turns into a proton and shoots out an electron

Nuclear Equations

100

²³¹₉₁Pa →  ____ + ²²⁷₈₉Ac

⁴₂He

200

²⁰⁶₈₂Pb + ____ → ²¹⁰₈₄Po

⁴₂ He

300

____ → ⁰_-1 e + ²¹⁴₈₄ Po + ⁰₀ ɣ

²¹⁴₈₅ At

400

Write a nuclear equation of ²³¹₉₁ Pa if it underwent alpha decay 2 times.

²³¹₉₁ Pa --> 2 (⁴₂ He) + ²²⁷₈₇ Fr

(Or something similar)

500

Write a nuclear equation of ¹⁹⁸₈₅ At if it underwent beta decay 3 times.

¹⁹⁸₈₅ At --> 3 (⁰_-1 e) + ¹⁹⁸₈₈ Ra

(Or something similar)

Random

100

(True or false) C-13 and C-14 are isotopes of one another.

True

200

(True or False) Gamma decay is the most ionising type of radiation

False

300

(True or False) Writing ⁶³₂₉ Cu and Cu-63 gives the same information

True

400

The element originally called quicksilver that had a Greek name hydrargyrum meaning liquid silver.

Mercury (Hg)

500

Uranium-238 and Uranium-235 both undergo many phases of decay until they reach stable isotopes of Lead. The difference between the their respective stable isotopes is...

Uranium-238 stabilises at Lead-206

Uranium-235 stabilises at Lead-207

Stopping Radiation

100

The least penetrating type of radioactive decay

Alpha

200

The most penetrating type of radioactive decay

Gamma

300

Alpha decay can be stopped by

*Several possible answers* Paper, air, skin, etc.

400

Beta and Beta-Plus Decay can be stopped by

*Answers may vary* Heavy clothes, aluminum, wood

500

Gamma radiation can be stopped by

Several inches of heavy metals

Periodic Table Info

100

The atomic number tells us

The number of protons

200

Atomic mass is calculated how?

(Normal not average)

Protons + Neutrons

300

Which is found on the periodic table:

Average atomic mass 

or 

Atomic Mass

Average Atomic Mass

400

Where do protons, neutrons, and electrons exist in an atom

Protons and neutrons - nucleus

Electrons - Shells (or electron cloud)

500

Average Atomic Mass is calculated by

(Average not regular)

(Mass x Abundance).....