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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
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A pH of 5 is how many more times acidic than a pH of 6? |
10 |
102E.7, p. 109 A pH of 5 is 10 times more acidic than a pH of 6. |
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What happens when an alkali is placed in water? |
alkali decreases the concentration of hydrogen ions |
102E.7, p. 108 An alkali decreases the concentration of hydrogen ions when placed in water. |
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True or False: Values below 7 indicate more alkalinity? |
False |
102E.7, p. 109 True statements about the pH scale include: pH scale is a logarithmic scale that identifies the degree of acidity or alkalinity of a substance; a value of 7 indicates a neutral substance; values below 7 indicate more acidity; values above 7 |
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On the pH scale, numbers less than 7 indicate a(n): |
Acidic solution |
102E.7, p. 109 On the pH scale, numbers less than 7 indicate an acidic solution. |
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On the pH scale, numbers greater than 7 indicate a(n): |
Alkaline solution |
102E.7, p. 109 On the pH scale, numbers greater than 7 represent an alkaline solution. |
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Solutions that are acidic or alkaline in value can be dissolved in and/or contain: |
Water |
102E.7, p. 107 Solutions that are acidic or alkaline in value can be dissolved in and/or contain water. |
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What kind of substance does pH indicate the acidity or alkalinity of? |
water-based |
102E.7, p. 107 pH indicates the acidity or alkalinity of a water-based substance. |
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A solution that has more negative hydroxide ions than positive hydrogen ions is: |
Alkaline |
102E.7, p. 108 A solution is alkaline if it has more negative hydroxide ions than positive hydrogen ions. |
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What happens when an alkali is placed in water? |
alkali decreases the concentration of hydrogen ions |
102E.7, p. 108 An alkali decreases the concentration of hydrogen ions when placed in water. |
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A substance that increases the concentration of hydrogen ions when placed in water because it donates, or releases, H+ ions is a(n): |
Acid |
102E.7, p. 108 A substance that increases the concentration of hydrogen ions when placed in water because it donates, or releases, H+ ions is an acid. |
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What is a negatively charged ion called? |
Anion |
102E.7, p. 108 A negatively charged ion is called an anion. |
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True or False: On the pH scale, the closer you get to 14, the stronger the acidity. |
False |
102E.7 p. 109 On the pH scale, the closer you get to 14, the stronger the alkalinity. |
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A solution that has more negative hydroxide ions than positive hydrogen ions is: |
Alkaline |
102E.7, p. 108 A solution is alkaline if it has more negative hydroxide ions than positive hydrogen ions |
