Interactive Worksheet
TN-CHEM-GR9-37319 · v2.4
Isotopes
Grade 9 · Chemistry · Atomic Structure · FBISE
Grade
Grade 9
Subject
Chemistry
Topic
Atomic Structure
Subtopic
Isotopes
Curriculum
FBISE
Difficulty
Core
Time
20 minutes
Total marks
54
Student name
Teacher name
Date
Learning objectives
- Recognise isotopes accurately in chemistry contexts.
- Explain the underlying rule of isotopes in the student's own words.
- Apply isotopes to multi-step and unfamiliar problems.
- Justify a chosen method and identify errors in another student's work.
Skills assessed
- Fluency and recall
- Method and setting out
- Reasoning and justification
- Problem solving in context
- Self-assessment
Instructions
- Write your name, your teacher's name and the date in the header.
- Answer every question in the space provided. Continue on the back if needed.
- Show all working — method marks are awarded even when the final answer is wrong.
- Aim to finish in about 20 minutes.
- Complete the reflection box at the end before you hand the sheet in.
Warm-up
Bloom: Remember · 4 marks
Answer quickly. These check you are ready for the topic.
1.Circle one fact you already know about isotopes.
[1]2.Name one fact you already know about isotopes.
[1]3.State one fact you already know about isotopes.
[1]4.Circle one fact you already know about isotopes.
[1]
Recall
Bloom: Remember · 4 marks
Complete from memory. No calculator, no notes.
1.Complete the key term used in isotopes described here: item 1.
[1]2.List the key term used in isotopes described here: item 2.
[1]3.Define the key term used in isotopes described here: item 3.
[1]4.Label the key term used in isotopes described here: item 4.
[1]