Classify the following changes of substances as PHYSICAL or CHEMICAL: 12(g) - 12(s) 12(s)+ sodium bisulfate - 2Nal (aq)+ other products 1. Physical solid potassium dichromate melts and 2. Chemical turns dark when heated, and returns to its original color as it cools to form a solid

Classify the following changes of substances as PHYSICAL or CHEMICAL: 12(g) - 12(s) 12(s)+ sodium bisulfate - 2Nal (aq)+ other products 1. Physical solid potassium dichromate melts and 2. Chemical turns dark when heated, and returns to its original color as it cools to form a solid

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter4: The Structure Of The Atom

Section: Chapter Questions

Problem 121A

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Question

Classify these as physical or chemical

Classify the following changes of substances as PHYSICAL or CHEMICAL:
12(g) - 12(s)
12(s)+ sodium bisulfate -
2Nal (aq)+ other products
1. Physical
solid potassium
dichromate melts and
2. Chemical
turns dark when heated,
and returns to its original
color as it cools to form a
solid

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