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25 Cards in this Set
- Front
- Back
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Acid |
A substance that can including turning litmus red, neutralise an alkali and dissolving some metals. Have a pH less than 6. It is usually corrosive or sour-tasting. |
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Base |
Turn red litmus paper blue, neutralise an acid and have a pH greater than 8. They have a bitter taste. |
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Alakli |
A soluble base (dissolves in water). Turn red litmus paper blue, neutralise an acid and have a pH greater than 8. |
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Chemical reaction |
An irreversible reaction (cannot be undone). A new substance is made. |
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Physical reaction |
A reversible reaction (can be undone). |
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Chemical reaction - 3 indicators |
1. A colour change. 2. A temperature change (gets colder/warmer). 3. Gas given off (smell, bubbling, fizzing). |
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An indicator |
Changes colour when reacting with another substance (e.g. an acid or an alkali). |
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Acid + Metal --> |
Salt + Hydrogen gas |
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Acid + Metal Carbonate --> |
Salt + Water + Carbon Dioxide |
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Acid + Metal Oxide --> |
Salt + Water |
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Acid + Metal Hydroxide --> |
Salt + Water |
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Hydrochloric acid makes __________ Salt |
_________________ acid makes Chloride Salt |
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Nitric acid makes __________ Salt |
_________________ acid makes Nitrate Salt |
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Sulfuric acid makes __________ Salt |
_________________ acid makes Sulfate Salt |
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Irritant - Might make your skin itchy. Rinse your hands with water. |
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Corrosive - Can burn skin or objects. Wash hand immediately with water. |
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If something is a WEAK ACID, what colour and pH would it be? |
If something is pH 4-6 and orange/yellow, what substance would it be? |
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If something is a STRONG ACID, what colour and pH would it be? |
If something is pH 1-3 and red, what substance would it be? |
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If something is a STRONG ALKALI, what colour and pH would it be? |
If something is pH 12-14 and purple, what substance would it be? |
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If something is a WEAK ALKALI, what colour and pH would it be? |
If something is pH 8-11 and blue, what substance would it be? |
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If something is a NEUTRAL, what colour and pH would it be? |
If something is pH 7 and green, what substance would it be? |
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What is this? |
What does the pH scale look like? |
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Universal Indicator |
A substance that changes colour to show a pH value from 1 to 14 to show how acidic or alkaline something is. |
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What colour does litmus paper turn with acids? |
Paper that turns red with acids only. |
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What colour does litmus paper turn with alkalis? |
Paper that turns blue with alkalis only. |
