Scratch, Shine and Streak
5-PS1-3
Read the record, then answer the questions.
Four Unlabeled Minerals
Test results for four unlabeled minerals, each tested the same five ways. WHAT EACH MINERAL DID Mineral A: scratched by a fingernail, pearly shine, white streak, not pulled by a magnet, no fizz Mineral B: scratches glass, glassy shine, no streak, not pulled by a magnet, no fizz Mineral C: not scratched by a coin, metallic shine, black streak, pulled by a magnet, no fizz Mineral D: scratched by a coin but not a fingernail, glassy shine, white streak, not pulled by a magnet, fizzes with vinegar Tests: scratch, shine, streak on a rough white tile, magnet, a drop of vinegar.
- 1. Which single test picks out mineral C on its own?
- 2. A and D both leave a white streak. Which test tells them apart?
- 3. Why was every mineral given the same five tests?
- 4. Which mineral scratched glass?
- A.The way its surface reflects light
- B.How heavy it feels
- C.How hot it gets in the sun
- A.One test may give the same result for two different minerals
- B.One test is never useful
- C.More tests always give the same result
- A.The color of the powder a mineral leaves when rubbed on a rough white tile
- B.How heavy the mineral is
- C.How shiny the mineral is
- A.It is magnetic
- B.It is melting
- C.It reacts with the vinegar, which is a property you can test
- A.A mineral's color can vary, but its streak usually stays the same
- B.Streak is prettier
- C.Color cannot be seen
- A.It is harder than glass
- B.It is made of glass
- C.It is softer than glass
LessonPrint · 5-PS1-3 · Set 8 · free to copy for classroom use