Radiation and Radioactive Decay

Mr. Anderson explains radioactive decay, starting with the basics of radiation and how it is measured using a Geiger counter. He discusses the role of nuclear forces in holding atoms together and the different types of decay: alpha, beta, and gamma. The video also covers how to write and balance nuclear equations, using examples like uranium-238 and cesium-137. The goal is to understand how atoms achieve a stable ratio of neutrons to protons through various decay processes.

What device is used to measure radiation?

• Voltmeter

• Barometer

• Geiger counter

• Thermometer

What force holds the nucleus together?

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

• Gravitational force

Which type of decay involves the emission of two protons and two neutrons?

• Gamma decay

• Alpha decay

• Beta plus decay

• Beta minus decay

Which type of radiation is similar to X-rays and has no charge?

• Delta radiation

• Gamma radiation

• Beta radiation

• Alpha radiation

What happens to uranium 238 during alpha decay?

• It gains two protons

• It loses two protons and two neutrons

• It gains an electron

• It loses an electron

What is the result of beta minus decay in terms of atomic number?

• The atomic number decreases by 2

• The atomic number remains the same

• The atomic number increases by 1

• The atomic number decreases by 1

Which element does cesium 137 become after beta minus decay?

• Xenon

• Iodine

• Barium

• Tellurium

What is a positron?

• A proton with a positive charge

• An electron with a positive charge

• A proton with a negative charge

• A neutron with no charge

What is the atomic number of sodium?

• 13

• 10

• 11

• 12

What is the main purpose of balancing nuclear equations?

• To ensure the number of neutrons is equal

• To ensure both mass and atomic numbers are equal

• To ensure the atomic numbers are equal

• To ensure the mass numbers are equal