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. Why was every mineral given the same five tests?
- 2. Which mineral was pulled by a magnet?
- 3. Which minerals left a white streak?
- 4. A and D both leave a white streak. Which test tells them apart?
- A.Fool's gold is real gold
- B.Streaks are always black
- C.A streak test can tell apart minerals that look alike
- A.One a coin cannot scratch
- B.One that scratches glass
- C.One a fingernail can scratch
- A.The way its surface reflects light
- B.How hot it gets in the sun
- C.How heavy it feels
- A.Picking that one out from the rest
- B.Finding how hard they are
- C.Telling the other three apart
- A.It is magnetic
- B.It reacts with the vinegar, which is a property you can test
- C.It is melting
- A.Try another test, or consider that they may be the same mineral
- B.Decide they are different
- C.Stop testing
LessonPrint · 5-PS1-3 · Set 11 · free to copy for classroom use