What is Half-life?
Half-Life

Flashcard
•
Chemistry, Physics
•
8th - 9th Grade
•
Hard
Quizizz Content
FREE Resource
Student preview

15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Back
The amount of time it takes for half the nuclei in a sample of the isotope to decay.
2.
FLASHCARD QUESTION
Front
If the half-life of strontium-90 is 25 years, how much will remain after 100 years if you start with 4.0 g?
Back
0.25 g
3.
FLASHCARD QUESTION
Front
How many atoms of uranium-238 will remain after 4.5 billion years if you start with 50,000 atoms?
Back
25,000 atoms
4.
FLASHCARD QUESTION
Front
What is the half-life of Zn-71?
Back
2.4 minutes.
5.
FLASHCARD QUESTION
Front
If you start with 100.0 g of Zn-71, how much will be left after 7.2 minutes?
Back
12.5 g
6.
FLASHCARD QUESTION
Front
A radioactive isotope has a half-life of 10 years. If you start with 80 grams, how much will remain after 30 years?
Back
20 grams.
7.
FLASHCARD QUESTION
Front
What does it mean when we say an isotope has a half-life?
Back
It means that after one half-life, half of the original amount of the isotope will have decayed.
Create a free account and access millions of resources
Similar Resources on Wayground
15 questions
Radioactivity

Flashcard
•
8th - 9th Grade
15 questions
6.3 Half-Life

Flashcard
•
10th Grade
15 questions
6.3 Half-Life

Flashcard
•
10th Grade
15 questions
Midterm Topic Review

Flashcard
•
8th Grade
10 questions
Half-Life

Flashcard
•
8th - 9th Grade
15 questions
Half-Life

Flashcard
•
8th - 9th Grade
15 questions
Half-Life

Flashcard
•
8th - 9th Grade
15 questions
2nd Quarter Bonus

Flashcard
•
8th 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