Podcast
Questions and Answers
Which of the following oxides would likely produce an acidic solution in water?
Which of the following oxides would likely produce an acidic solution in water?
- Nitrogen dioxide (correct)
- Magnesium oxide
- Sodium oxide
- Carbon dioxide (correct)
A substance with a pH of 10 is considered acidic.
A substance with a pH of 10 is considered acidic.
False (B)
What is the general conclusion about the relationship between the type of oxide (metal or non-metal) and the acidity/alkalinity of the solution formed in water?
What is the general conclusion about the relationship between the type of oxide (metal or non-metal) and the acidity/alkalinity of the solution formed in water?
Soluble metal oxides form alkaline solutions in water, while soluble non-metal oxides form acidic solutions in water.
On the pH scale, substances with a pH of ______ are considered neutral.
On the pH scale, substances with a pH of ______ are considered neutral.
Match the following oxides with their predicted acidity/alkalinity in water:
Match the following oxides with their predicted acidity/alkalinity in water:
Flashcards
pH Scale
pH Scale
A scale measuring the acidity or alkalinity of a substance.
Acids
Acids
Substances on the left of the pH scale, ranging from red to green.
Alkalis (Bases)
Alkalis (Bases)
Substances on the right of the pH scale, ranging from light blue to purple.
Neutral Substances
Neutral Substances
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Metal Oxides
Metal Oxides
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Study Notes
pH Scale
- The pH scale measures acidity and alkalinity
- Acids are on the left of the scale and turn indicators red to yellow
- Bases (alkalis) are on the right of the scale and turn indicators light blue to purple
- Neutral substances are in the middle of the scale (7) and turn indicators to a jade green
Testing Oxides
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Metal oxides react with water to form alkalis
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Non-metal oxides react with water to form acids
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Magnesium oxide (MgO): Metal oxide, reacts with water to form an alkali (turns litmus paper blue)
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Sodium oxide (Naâ‚‚O): Metal oxide, reacts with water to form an alkali (turns litmus paper blue)
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Carbon dioxide (COâ‚‚): Non-metal oxide, reacts with water to form an acid (turns litmus paper red)
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Sulfur dioxide (SOâ‚‚): Non-metal oxide, reacts with water to form an acid (turns litmus paper red)
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Nitrogen dioxide (NOâ‚‚): Non-metal oxide, reacts with water to form an acid (turns litmus paper red)
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Soluble metal oxides form alkalis in solution
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Soluble non-metal oxides form acids in solution
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