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WorksheetsSalesa Chemistry Chapter 2 & 3
Total questions: 12
Worksheet time: 6mins
Mustafa has a very dangerous acid at home and he wants to neutralize its harmful effects. What is the best option?
Add water
Put it in the drain
Add a base to it
Add a salt to it
What substances will be formed if Mustafa adds the base to the acid?
salt and oxygen
salt and water
salt and alkali
hydrogen and oxygen
Mustafa has decided he will add a base. Which of the following are bases?
Lemon juice
Vinegar
Detergent
Calcium Hydroxide
Which of the following are properties of bases such as the one Mustafa added?
Taste sour
Taste bitter
Feel soapy
Feel rough
Which arabic word is the term "alkali" derived from?
حمض
حرض
القلي
أشنان
Write down any 2 uses of calcium hydroxide
Why are acids and bases regarded as "طبيعة تزين طبيعة"
They help in making other chemicals
They have distinct tastes
They are chemical opposites
The beautify everything by cleaning dirt and filth
Mustafa drinks his tea with salt instead of sugar! But he has no idea what it actually is. Lets teach him.
Write the chemical formula for common table salt.
(a)
Which acid and base would form table salt sodium chloride when reacted together? Hint: pay attention to the words sodium & chloride.
hydrochloric acid and sodium hydroxide
ammonia and hydrochloric acid
sulphuric acid and sodium hydroxide
Carbonic acid and calcium hydroxide
Mustafa was amused to find out that before fridges, salt was used to preserve meat. How does this work?
The sodium in salt reacts with the meat
Salt stops bacteria growth
Salt cools the food down
According to Mustafa, the only use of salt is for eating! Write down any one other use for salts.
Mustafa says salts can only be white. Is he correct?
No, salts come in many colours
Yes, he is indeed correct
