8.6 D TEK Check

What is the pH range of acids?

• 7 to 14
• 6 to 10
• 0 to 6
• 0 to 14

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TEKS.SCI.8.6D

What is the pH range of bases?

• 8 to 14

• 6 to 10
• 0 to 6
• 0 to 14

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TEKS.SCI.8.6D

What is the pH range of a neutral substance?

• greater than 7

• 7

• less than 7

• 0 to 14

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TEKS.SCI.8.6D

The pH of water is a 7. Is water acidic, basic, or neutral?

• acidic

• neutral

• basic

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TEKS.SCI.8.6D

Which of the following is a property of acids?

• Bitter taste

• Slippery feel

• Sour taste

• Turns red litmus paper blue

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TEKS.SCI.8.6D

Which of the following substances is a base?

• Lemon juice

• Vinegar

• Baking soda

• Hydrochloric acid

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TEKS.SCI.8.6D

Compare the pH of lemon juice and soap. Which one is more acidic?

• Lemon juice

• Soap

• Both have the same pH

• Neither is acidic

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TEKS.SCI.8.6D

If a solution has a pH of 9, what can you infer about its properties?

• It is acidic and has a sour taste

• It is neutral and has no taste

• It is basic and has a slippery feel

• It is acidic and turns blue litmus paper red

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TEKS.SCI.8.6D

Design an experiment to determine whether a household cleaner is acidic or basic.

• Use a thermometer to measure the temperature

• Use litmus paper to test the pH

• Use a ruler to measure the volume

• Use a stopwatch to time the reaction

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A student finds that a solution turns red litmus paper blue. What can the student conclude about the solution?

• It is acidic

• It is basic

• It is neutral

• It is neither acidic nor basic

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TEKS.SCI.8.6D