1. A solution is a homogeneous mixture of 2 or more substances. Which of
the following mixture is a concentrated solution?
A. Commercial vinegar
B. 60 % rubbing alcohol
C. bleach
D. 10 Karat gold ring

2. A saline solution is a salt and water mixture that is safe for our body. What
is the % concentration of NaCl (salt) present in this fluid solution? The
standard ratio is 9 grams NaCl for every 1000g of water.
A. 0.09%
B. 0.9%
C. 9.0%
D. 90%

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