7F Acids and alkalis Flashcards
Name 2 acids you might find in your kitchen
Lemon (juice)
Vinegar
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Name an alkali that you might find in your kitchen.
Oven cleaner
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Do acids taste sweet, salty or sour?
Acids taste sour.
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What does this hazard symbol mean?
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Toxic
![](https://s3.amazonaws.com/brainscape-prod/system/cm/202/162/406/a_image_thumb.png?1480587530)
What does this hazard symbol mean?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/202/162/473/q_image_thumb.png?1480587589)
Corrosive
![](https://s3.amazonaws.com/brainscape-prod/system/cm/202/162/473/a_image_thumb.png?1480587598)
What does this hazard symbol mean?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/202/162/486/q_image_thumb.jpg?1480587736)
Harmful
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What do you call a substance that changes colour to show whether something is an acid or an alkali?
A substance that changes colour to show whether something is an acid or an alkali is called an indicator.
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If universal indicator goes red in a substance, what sort of substance is it?
If universal indicator goes red in a substance, the substance is a strong acid.
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If universal indicator goes yellow in a substance, what sort of substance is it?
If universal indicator goes yellow in a substance, then it is a weak acid.
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If universal indicator goes green in a substance, what sort of substance is it?
If universal indicator goes green in a substance, then the substance is neutral.
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If universal indicator goes dark purple in a substance, what sort of substance is it?
If universal indicator goes dark purple in a substance, then it is a strong alkali.
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What is the name of the scale that indicates how acidic or alkaline a substance is?
The name of the scale that indicates how acidic or alkaline a substance is, is the pH scale.
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What pH is a neutral solution?
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A neutral solution is pH 7
What pH is acid?
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Acid is pH 1 to 6.
1 is a strong acid and 6 is a weak acid.
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What pH is alkali?
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Alkali is pH 8 to 14.
8 is a strong alkali and 14 is a weak alkali.
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