Multiple Choice
Which of the following is an example of matter undergoing only a physical change?
A) Carbon (solid) being burnt in air to form carbon dioxide (a gas)
B) Hydrogen (gas) forming water with oxygen (gas)
C) Water (liquid) forming steam (gas) after being heated
D) Chlorine (gas) forming Hydrogen Chloride (liquid) when mixed with water
E) Sodium (solid) forming sodium hydroxide (aqueous) when mixed with water.
Correct Answer:

Verified
Correct Answer:
Verified
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