Year 8 Science · Unit 2 · Lesson 16
Foundation Worksheet
Learning Goals
Odd one out
Circle the item that does not belong in each group. Then explain why it doesn't fit in the answer column.
| # | Group | Odd one out + reason |
|---|---|---|
| 1 | Electrical wiring Jewellery Cooking pots Surgical scalpels | |
| 2 | Inert Non-flammable Less dense than air Very reactive | |
| 3 | Gold Platinum Silver Sodium |
Hint for group 1, think about which property the other three uses all require. | Group 2, which word describes something that would NOT be safe in a weather balloon? | Group 3, which element would not be used for jewellery, and why?
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.
Iron is used for structural steel because it is the lightest metal available.
Correct it:
Gold is used in electronic contacts because it does not corrode.
Correct it:
Helium is used in weather balloons because it is flammable and therefore rises.
Correct it:
A property that explains a use must relate to what the material needs to do in that use.
Correct it:
Phosphorus is used in matches because it is unreactive.
Correct it:
1. Name one property of helium and explain how that property makes it suitable for use inside weather balloons.
2. Complete the property-use chain for gold: Property → → Use: electronic contacts in circuit boards. Why does this property matter for that use?
Wrap Up
In one sentence, what was the main idea of this lesson?