ScienceFreePrintable
Introduction to Ions
A free science worksheet ready for your classroom. Open in Kuraplan to grab the print-ready PDF, customize it for your students, or generate a fresh version in seconds.
Introduction to Ions
📚 Part 1: Understanding Ions
1. What is an ion?
A neutral atom with equal protons and electrons
A charged particle formed when an atom gains or loses electrons
A type of chemical bond
A molecule with two or more atoms
2. Complete the sentence: When an atom loses electrons, it becomes ________ charged and is called a ________.
3. What is the difference between a cation and an anion?
Cations are positive ions, anions are negative ions
Cations are negative ions, anions are positive ions
Cations are metals, anions are non-metals
There is no difference
4. Which of the following statements about electron transfer are correct? (Tick all that apply)
Metals tend to lose electrons
Non-metals tend to gain electrons
Group 1 elements lose 1 electron
Group 7 elements gain 1 electron
⚡ Part 2: Predicting Ion Charges
5. Using the periodic table, predict the charge on the following ions:
a) Sodium (Na) - Group 1: ________
b) Chlorine (Cl) - Group 7: ________
c) Magnesium (Mg) - Group 2: ________
d) Oxygen (O) - Group 6: ________
6. Explain why Group 1 metals form ions with a +1 charge.
7. A fluorine atom has 9 protons and 9 electrons. When it forms an ion, it gains 1 electron. What is the charge on the fluoride ion?
+1
-1
+2
-2
8. Draw a simple diagram showing how a sodium atom (11 protons, 11 electrons) becomes a sodium ion. Show the electron that is lost.
🔬 Part 3: Apply Your Knowledge
9. Match each element with the correct ion it forms:
Calcium (Ca)
Bromine (Br)
Aluminium (Al)
Sulfur (S)
S²⁻
Ca²⁺
Br⁻
Al³⁺
10. Explain in your own words why ions are important in chemistry and give one example of where you might find ions in everyday life.
About This Worksheet
Free in Kuraplan
Sign up free, grab the PDF, and customize it for your class.
Print-Ready
Formatted for standard paper. Clean layout, easy to read.
AI-Generated
Created with Kuraplan's AI, designed for real classroom use.
For Teachers & Parents
Use in classrooms, for homework, tutoring, or homeschool.
Need a custom version of this worksheet?
Kuraplan's AI generates custom worksheets in seconds — differentiated for every learner, aligned to your curriculum.
Generate Custom Worksheets — Free No credit card Curriculum-aligned Under 60 seconds
More Science Worksheets
Year 5
Science Skills Review Worksheet
Free
Year 3
Year 3 Science Comprehension
Free
Year 6
Year 6 Science Exploration
Free
Year 9
Homeschool Science Worksheet
Free
Year 8
Earth Science Exploration Worksheet
Free
Year 8
Earth Science Question Worksheet
Free
Year 10
Soil Science Through Drama
Free