Logo

Tusomesasa.

  • Home
  • About
    • About us
    • Contact us
    • Earnings
    • Withdrawals
    • Make money
      • How to earn
      • About affiliate
      • Sale resources
      • Invite friends
      • My earnings
    • Verify payment codes
    • Receipts & invoices
    • Premium packages
    • Newsletter
    • FAQs
  • Products
    • All products
    • Schemes of work
    • Categories
      • Biology essays
      • KSEF projects
      • Notes
      • Topical questions
    • Examinations
      • Form 4 examinations
      • Form 1 examinations
  • Topical questions
  • Biology essays
  • Notes
  • KSEF projects
  • Examinations
    • Form 1 examinations
    • Form 4 examinations
  • Schemes of work
  • All products
  • Verify payment codes
  • Tutorials
  • Q & A
  • Question & answer
  • Jobs
    • Competitions
    • Job opportunities
    • Schemes development
  • Login
    • New member?
    • User portal
    • Staff portal
    • Teacher portal
    • Client portal
  • Downloads
    • Advertisements
    • Notices
    • Manuals
    • Tenders
  • Frequently asked questions
Get Started

Radioactivity questions

  1. Home
  2. Education levels
  3. Secondary
  4. Chemistry Form 4
  5. Radioactivity
  6. Definition of half life

Definition of half life

  • 250 views
  • Secondary
  • Chemistry
  • 02-Oct-2024 11:29:22
  • By: Shadrack Thomas

Define the term half-life. (1mark)

 



Suggested resposponses


Time taken for the quantity of a radioactive substance to reduce to half its initial mass;

 

...




  • Tutorials
  • Our products
  • Schemes of work
  • Tell a friend
Radioactivity questions
Types of radiations
Dangers of radioactivity
Similarities of both nuclear fission and nuclear fusion
Why graphite is used as a lubricant?
Applications of Radioactivity in medicine
Passing Chlorine through solution of potassium iodide
Uses of Alkanols
Uses of sodium metal

Recent tutorials

Assessment of physical education program and student progress in physical education

Assessment of physical education program and student progress in physical education

22-Nov-2025 14:22:07
Support in herbaceous plants

Support in herbaceous plants

07-Nov-2025 19:46:22
How competency based education (CBE) is transforming student's lives in Kenya

How competency based education (CBE) is transforming student's lives in Kenya

18-Apr-2026 17:24:04
How to keep your online account safe

How to keep your online account safe

20-Nov-2024 11:03:02
Importance of objectives in measurement and evaluation during learning process

Importance of objectives in measurement and evaluation during learning process

22-Nov-2025 19:11:53


Enter the keyword in the space provided below to search

Quickly find what you need using our search tool. We give live results as you type the word. However, you can submit the search request for more detailed results



Tusomesasa Enterprises

Moi Avenue
Nairobi, Kenya

Phone: +254113740906
Email: info@tusomesasa.co.ke

Useful Links

  • Home
  • About us
  • Make money
  • Terms of service
  • Privacy policy
  • Question and Answer

Our products

  • Topical questions
  • Notes
  • KSEF projects
  • Biology essays

Examinations

  • Form 1 examinations
  • Form 4 examinations

Our Newsletter

Stay updated & informed. Subscribe today to our newsletter!

© Copyright Tusomesasa Enterprises. All Rights Reserved
Designed by BootstrapMade
Definition of half life

Please wait as we process the answer. This may take a second or two...