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Acids and alkalis
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What is acidity ?
Acidity is a measure of how acidic a substance is . It depends on how many hydrogen ions the substance produce in water.
Acids and alkali are chemical opposite?
TRUE OR FALSE
Describe common alkali in the laboratory?
Sodium hydroxide, potassium hydroxide and calcium hydroxide.
What is an alkali?
An alkali is a base that dissolves in water and produces hydroxide ions)OH-
What is the main difference between a dilute acid and a concentrated acid?
A dilute acid is an acid that has been mixed with water(it had less acid and more water) //con; is more dangerous
If you use acid , what is safety precaution for you?
Always use Eye protection (goggles) or safety glasses when you using acid
Mention three common acids in the laboratory?
Hydrochloric acid , sulfuric acids and nitric acid.
Strong acids like sulfuric acid are corrosive but strong alkalis like sodium hydroxide are not corrosive?
TRUE OF FALSE
How can we make dilution of acid?(@AAA TW)
Water add to acid (or) acid add to water
What should you do if you spill acid?
You should wash the area with lots of water.
What does corrosive mean?
A substance that can damage or burn materials such as skin , metals, or other objects by a chemical reaction
Describe one properties of acid?
Sour taste/ pH value less than 7/ turn blue litmus paper red/ strong acid crossive
Describe the taste of lemons and limes?
They taste sour.
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