Colegio San PatricioName _________________________________________________ Date _________

1.- Which of the following statements is true concerning acids?a) Are proton acceptors c) turn litmus to blueb) Release hydroxide ions d) feel slippery

2.- Which of the following statements is true concerning bases?a) Release hydrogen ions c) turn litmus to redb) React with metals d) are caustic

3.- In a base:a) the OH < H b) the OH = Hc) the OH > H d) none

4.- On a pH scale, a pH = 1.5 would bea) acidic b) very basic c) basic d) neutral

5.- Of the following solutions, select the one that is basic: coffeer pH = 5, tomato juice pH = 4, milk pH=6.5, bleach pH = 11.5a) milk b) tomato c) bleach d) coffee

6.- A weak acid:a) does not dissolve in waterb) ionizes slightly in water to give a few ionsc) ionizes 100% in waterd) all are correct

7.- When an acid neutralizes a base:a) a salt is produced b) water is producedc) H=OH d) all of the above

8.- The following are strong acids except:a) HCl b) NaOH c) H2SO4 d) HNO3

9.- What is the color of litmus indicator in a solution with pH = 9 ?a) red b) pink c) colorless d) blue

10.- What is the color of phenolphthalein in a solution with pH = 11?a) red b) pink c) colorless d) blue