L3 CFU

THE ATOM Lesson 3 Check for Understanding

Part ONE: BALANCING NUCLEAR REACTIONS -Predict the missing product or reactant in the following nuclear reactions. Determine the type of nuclear reaction (α emission, β emission, γ emission, fission, or fusion) described. 

Drawing 2024-02-02 08.22.35.excalidraw :

⁶₃ Li - > ⁴₂ He + ² ₁ H

beta decay: ⁶₃ Li - > ⁰ _-1 e + ⁶ ₄ Be

Find how much Lithium - 6 will be remaining in an 8 gram sample after 2 minutes if it has a half life of 30 seconds.

120 / 30 = 4 8 - > 4 - > 2 - > 1 - > 0.5

Type of Nuclear Reaction 

Part TWO: Writing Balanced Nuclear Reactions - Use the isotope(s) given below to write the nuclear decay equations as indicated: 

1. Write the Balanced nuclear equations for the alpha decay of: 

a) Plutonium-234 

²³⁴₉₄ P - > ⁴₂ He + ²³⁰₉₂ U

b) Strontium-90  ⁹⁰₃₈ Sr → ⁴₂ He + ⁸⁶₃₆ Kr

2. Write the balanced nuclear equations for the alpha, beta and gamma decay of Radium-226 

a) α emission - ²²⁶₈₈ Ra - > ⁴₂ He + ²²²₈₆ Rn

b) β emission - ²²⁶₈₈ Ra - > ⁰_-1 e + ²²⁶₈₉ Ac

c) γ emission - ²²⁶₈₈ Ra - > ⁰₀ Y + ²²⁶₈₈ Ra