← Physics (0625)
Q1 / 5
Radioactivity
Higher
2 marks
How does alpha radiation ionise atoms?
A
High charge (+2) strongly strips electrons from nearby atoms — ionising; short range, stopped by paper
B
Alpha particles attach to atoms, making them radioactive
C
Alpha particles only ionise through nuclear reactions
D
Alpha radiation does not ionise — only beta does
Need a hint?