Year 8 Science · Unit 2 · Lesson 08
Foundation Worksheet
Learning Goals
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Isotopes of the same element have different numbers of protons.
Correct it:
Carbon-14 and carbon-12 are both carbon because they have 6 protons.
Correct it:
Isotopes of an element have different chemical properties.
Correct it:
Carbon-14 is used in radiocarbon dating to estimate the age of fossils and ancient organic material.
Correct it:
Different isotopes of hydrogen have completely different atomic numbers.
Correct it:
Odd one out
Circle the item that does not belong in each group. Then explain why it doesn't fit.
| # | Group | Your answer (odd one + reason) |
|---|---|---|
| 1 | Carbon-12 Carbon-13 Carbon-14 Nitrogen-14 | |
| 2 | Radiocarbon dating Bone scan imaging Cancer treatment Measuring atomic radius | |
| 3 | Same proton number Different neutron number Different element Different mass number |
1. What is an isotope? In your answer, refer to proton number and neutron number.
2. Name one isotope and describe one use of that isotope in everyday life or medicine.
Wrap Up
In one sentence, what was the main idea of this lesson?