3  Two or more substances that are mixed together but not chemically combined form a _____ . (7)

 4  Color, melting and boiling point, density, and solubility are ____ properties. (8)

 6  The pH ____ ranges from 0 to 14 (5)

 7  A substance with a pH of 7 is ____ . (7)

 9  A solution with a pH lower than 7 is _____ , (6)

11 pH is the measure of the concentration of positive hydrogen_____ in a solution (4)

13 Most (but not all) ____ compounds contain no carbon. (9)

14 pH is a measure of the ____ ___ concentration in a solution (8,3)

 1  Two or more elements that chemically combine in a fixed ratio form a _____ . (8)

 2  A compound formed when the negative ions from an acid combine with the positive ions from a base (4)

 4  Matter exists in four states: solid, liquid, gas and ____ . (6)

 5  The property that describes how easily a substance catches fire is ____ . (14)

 6  The property that describes the ability of one substance to dissolve in another is _____ . (10)

 8  A soapy, slippery cleaning solution is probably _____ . (5)

10 Organic compounds which are often associated with living things contain _____ . (6)

12 When a(n) ____ is dissolved in water, hydroxide ions are released into the solution. (4)