Physics SSS3 First Term
Test
Physic SSS3 First Term Mid-Term Assessment
Physic SSS3 First Term Mid-Term Assessment
21 questions · 42 points possible
- 01
Which of the following statements is not correct? Isotopes of an element have?
- the same number of electric charges on the nucleus.
- the same chemical properties
- different nucleon numbers
- different atomic mass
- 02
A certain radioactive element has a half-life of 10 years. How long will it take to loose 7/8 of its atoms originally present.?
- 20
- 30
- 25
- 35
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