Nuclear Chemistry

Random

100

subatomic particle(s) located in the nucleus

What are protons and neutrons

200

What is fusion?

What is two smaller nuclei combining to form a larger nucleus

300

What is fission?

What is a nuclear reaction that involves the splitting of a heavy nucleus into a lighter nucleus.

400

In the isotope Uranium-235, what does the number 235 represent?

What is the mass number

500

spontaneously emitted particles or energy

What is radiation

Nuclear Reactions

100

Balance the following reaction: Iron-55 + _____ --> Manganese-55

What is a beta particle

200

Balance the following reaction: _____ --> Sulfur-32 + beta particle

Phosphorus-32

300

Balance the following reaction: Plutonium-242 --> alpha particle + _____

Uranium-238

400

Balance the following reaction: Californium-252 + _____ --> 3 neutrons + Lawrencium-259

Boron-10

500

Explain why we have to balance nuclear reactions.

Law of Conservation of Mass

Half-Life

100

What is half-life

Time required for half the amount of a radioactive element to decay

200

Thorium-234 has a half-life of 24 days, started with 100 g how much is left after 48 days?

What is 25 grams

300

Plutonium-239 has a half-life of 24,110 years how long will it take for 6.25 g to remain of a 100 g sample?

What is 96,440 years

400

An isotope has a half-life of 6 hours. What percentage will be left after 24 hours?

6.25%

500

A sample of strontium-90 has an activity of 5000 Bg. After 120 years the activity has fallen to 625 Bg. What is the half-life of strontium-90?

3