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 new mineral is scratched by a fingernail and leaves a white streak. Which is it most like?
- 3. Why was every mineral given the same five tests?
- 4. Which mineral scratched glass?
- A.Decide they are different
- B.Try another test, or consider that they may be the same mineral
- C.Stop testing
- A.Picking that one out from the rest
- B.Telling the other three apart
- C.Finding how hard they are
- 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 softer than glass
- B.It is made of glass
- C.It is harder than glass
- A.Streak is prettier
- B.Color cannot be seen
- C.A mineral's color can vary, but its streak usually stays the same
- A.One that scratches glass
- B.One a coin cannot scratch
- C.One a fingernail can scratch
LessonPrint · 5-PS1-3 · Set 2 · free to copy for classroom use