BOWEN\'S REACTION SERIES To help understand partial melting of rock, imogine a s
ID: 286855 • Letter: B
Question
BOWEN'S REACTION SERIES To help understand partial melting of rock, imogine a single solid frozen block of dark chocolate chips, ice chips, and butter pieces compressed together. We will compare this frozen block to a hypothetical rock with quartz, potassium feldspar, and amphibole minerals. This single frozen block is warmed up very slowly. 1. What ports of the frozen block melt first? 2. What melts second? chocolate chips 3. The heating chocolate chips ice chips ice chips butter pieces butter pieces of the block is stopped at a temperature where only the ice is just barely melted but is still near freezing. What happens to the butter pieces and chocolate chips? They melt too. They float around in the melted material. 4·Two students are discussing what happens to the chocolate chips. Student 1: The chocolate chips will melt along with the ice. If they're surrounded by melted material, they should melt as well, so everything will melt together Student 2: No, they melt at a higher temperature, and the ice does not reach a high enough temperature when it melts. The melted ice is still much too cold to melt the chocolate chips, so the chocolate chips will sit in whatever is melted. With which student do you agree? Why? 5. In the box below, fill in water ice, butter, and chocolate chips, showing the relative temperatures at which they melt, from lowest temperature to highest temperature. Cool O°C) (Hot 34°C) Bowen's reaction series describes the order in which minerals in magma melt and solidify. The order in which the minerals melt (or solidify) is given below from lowest temperatures to highest temperatures (Cool ~ 600) (Hot 1200°C) Quartz Muscovite Mica Potassium Feldspar Biotite Amphibole Pyroxene OlivineExplanation / Answer
1. Butter pieces melt first.
2. Ice chips melt second.
3. Butter pieces and chocolate chips melt too.
4. Student 2 is right. This is because all the substances representing the minerals in the Bowen's Reaction Series do not melt at the same temperature.
5. The order in which minerals melt from the lowest to highest temperatures are Water, Butter, Ice, Choclate chips.
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