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- 1. Multiple ChoiceWhich of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.Acids; pH less than 7Acids; pH greater than 7Bases; pH greater than 7Bases; pH less than 7 - 2. Multiple ChoiceThe esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that isneutralbasic
acidic or basic.acidic - 3. Multiple ChoiceIf an acid is combined with a base of equal strength, the result will most likely bea neutral solution.a stronger acid.impossible to tell without testing the pH.a stronger base
- 4. Multiple ChoiceHolly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beakeris a base.has a neutral pH.is an acid.does not have a pH. - 5. Multiple ChoiceWhich of the following is a base?orange juicewatervinegardishwashing detergent
- 6. Multiple ChoiceLitmus paper can be used to determine the _______ of a substance.relative volumetemperaturerelative pHchemical formula
- 7. Multiple ChoiceLitmus paper can be used to determine the _______ of a substance.relative volumetemperaturerelative pHchemical formula
- 8. Multiple ChoiceWhich of the following statements is correct?Blue litmus paper turns red when placed in a base.Red litmus paper turns blue when placed in a base.Blue litmus paper stays blue when placed in an acid.Red litmus paper stays red when placed in a base.
- 9. Multiple ChoiceCarrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink.
What type of chemical does Carrie have?Carrie has a neutral chemical.Carrie has an acidic chemical.Carrie has a basic chemical.The type of chemical Carrie has cannot be determined. - 10. Multiple ChoiceWhich of the following is an acid?shampoobaking sodaorange juicewater
- 11. Multiple ChoiceThe pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?3975
- 12. Multiple ChoiceHuman blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?strongly acidicslightly acidicstrongly basicslightly basic
- 13. Multiple ChoiceWhen using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.texturecolorlengthmass
- 14. Multiple ChoiceWhat would be considered the weakest base?8147.811.6
- 15. Multiple ChoiceMany cleaning solutions are bases. Which of the following is a property of most bases?feels slipperywhite colorcan only be liquidtastes sour
- 16. Multiple ChoicePure water has a pH of 7. Pure water _______.is a baseis a neutral substancecould be either an acid or a baseis an acid
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