What is the name of the following compound?
CaCl2
A) calcium chloride
B) carbon chloride
C) dichlorocalcium
D) calc two
E) dicalcium chloride
Question 2
Each night you measure your height just before going to bed.
When you arise each morning, you measure your height again and consistently find that you are 1 inch taller than you were the night before but only as tall as you were 24 hours ago Is what happens to your body in this instance best described as a physical change or a chemical change?
A) chemical change because it involves your body
B) physical change because it readily reverses
C) chemical change because it involves changes in your bone structure
D) physical change because water expands as it freezes
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