answer all questions please
Answers
1.
a). more corrosive
b). sour
c). bitter
d). universal
e). alkaline
f). basic
g). carbohydrate
2.
a). sodium hydroxide. (NaOH)
b). Magnesium hydroxide. Mg(OH)2
c). sodium hydrogen carbonate. NaHCO
3.
a). Acetic acid and Hydrochloric acid
b). Magnesium Hydroxide and Sodium Hydroxide
c). sodium chloride and caustic soda
d). turmeric and litmus
e). phenolphthalein and methyl orange
Answer:
1.
a. Neutralise
b. Sour
c. Bitter
d. Aromatic
e. Alkali
f. Basic
g. Basic
2.
a. Sodium hydroxide, NaOH
b. Magnesium hydroxide, Mg(OH)₂
c. Sodium bicarbonate,NaHCO₃
3.
a. Hydrochloric acid (HCl), Nitric acid (HNO₃)
b. Sodium hydroxide- NaOH, Aluminium hydroxide- Al(OH)₃
c. Sodium chloride (NaCl), Copper nitrate- Cu(NO₃)₂
d. Onion, turmeric
e. Litmus paper, phenolphthalein
4.
a. Acid rain
The rain which has pH less than 4.5 due to excessive acid in rain water is known as acid rain.
b. Neutralization reaction
The reaction between an acid and base leading to production of a salt and water is known as neutralization reaction
c. Acid base indicator
A substance which changes colour or release a certain odor when an acid or b car is put in it is known as acid base
5 .
a. Because non metal oxides on reacting with water give an acid and they turn blue litmus red.
b. Because metal oxides on reacting with water give off a base and they turn red litmus blue
c. Because speed things are basic in nature do they can react with the metals in utensils and can corrode them.
d. Because the metal oxides such as MgO can withstand very high temperatures