What is half-life?
Half Life Decay

Flashcard
•
Science
•
8th - 12th Grade
•
Hard
Quizizz Content
FREE Resource
Student preview

15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Back
Half-life is the time required for a quantity to reduce to half its initial amount, commonly used in the context of radioactive decay.
2.
FLASHCARD QUESTION
Front
If a substance has a half-life of 10 years, how much of a 100 g sample remains after 20 years?
Back
25 g (after 2 half-lives: 100g -> 50g -> 25g).
3.
FLASHCARD QUESTION
Front
What happens to the amount of a radioactive substance after each half-life?
Back
The amount of the substance decreases by half after each half-life.
4.
FLASHCARD QUESTION
Front
How many half-lives are needed for a substance to decay from 80 g to 10 g if its half-life is 5 years?
Back
3 half-lives (80g -> 40g -> 20g -> 10g).
5.
FLASHCARD QUESTION
Front
What is the formula to calculate the remaining quantity of a substance after a certain number of half-lives?
Back
Remaining quantity = Initial quantity × (1/2)^(number of half-lives).
6.
FLASHCARD QUESTION
Front
If the half-life of a substance is 15 minutes, how long will it take for it to decay completely after 5 half-lives?
Back
75 minutes (5 half-lives × 15 minutes each).
7.
FLASHCARD QUESTION
Front
What is radioactive decay?
Back
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation.
Create a free account and access millions of resources
Similar Resources on Wayground
15 questions
Nuclear Energy

Flashcard
•
8th Grade - University
15 questions
GTS Assessment

Flashcard
•
9th - 12th Grade
15 questions
Half Life Decay

Flashcard
•
8th - 12th Grade
15 questions
Half Life Decay

Flashcard
•
8th - 12th Grade
15 questions
Half Life Decay

Flashcard
•
8th - 12th Grade
15 questions
Half Life Review

Flashcard
•
9th - 12th Grade
15 questions
Half Life Review

Flashcard
•
8th - 11th Grade
15 questions
Calculating Half Life

Flashcard
•
7th - 12th Grade
Popular Resources on Wayground
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice

Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers

Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons

Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade
Discover more resources for Science
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
14 questions
Exterior and Interior angles of Polygons

Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade