1. True or false? Bases change litmus paper to blue.  | 
2. True or false? Ammonia is an acid.  | 
3. True or false? Properties of acids include being corrosive and having a sour taste.  | 
4. True or false? Sulfuric acid is known as a strong acid.  | 
5. True or false? Base solutions have a pH below 7.  | 
6. True or false? The chemical formula for sulfuric acid is H2SO4.  | 
7. True or false? Lemons contain citric acid.  | 
8. True or false? An alkali is an acid.  | 
9. True or false? An anion is an ion with more electrons than protons, giving it a negative charge.  | 
10. True or false? Neutral solutions have a pH of 0.  | 
11. True or false? Acids change litmus paper to red.  | 
12. True or false? The word acid comes from the Latin word acidus (meaning sour).  | 
13. True or false? The chemical formula for sodium hydroxide is NaH.  | 
14. True or false? A cation is an ion with more protons than electrons, giving it a positive charge.  | 
15. True or false? Acetic acid gives vinegar a sour taste and strong smell.  | 
16. True or false? Acid solutions have a pH above 7.  | 
17. True or false? Formic acid is found in bee venom.  | 
18. True or false? Sodium hydroxide is known as a weak base.  | 
19. True or false? DNA is an abbreviation for deoxyribonucleic acid.  | 
20. True or false? Potassium hydroxide contains potassium, oxygen and helium.  |