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WorksheetsSalesa chemistry chapter 1
Total questions: 25
Worksheet time: 14mins
Acids and bases are a way of classying substances according to their (a)
The word acid comes from the ______ word 'acidus' which means sour.
Greek
Latin
Hebrew
Egyptian
(a) is known as the father of Chemistry.
______ acid is found in tamarinds.
Acetic
citric
ascorbic
tartaric
Acidic acid solutions conduct electricity.
True
False
(a) acid is called the king of chemicals.
The dye on litmus paper is extracted from _____
Fungi
Algae
Lichens
Bacteria
The pH scale of water is ___
5.5
6
6.5
7
Things with a pH of 13 are highly ___
acidic
alkaline
The neutral colour of Phenolphthalein is ______
pink
orange
colourless
yellow
The Danish biochemist ______ introduced the pH scale.
Soren Adamson
Soren Sorensen
Hald Sorensen
Bak Sorensen
Ethanoic acid is also known as (a) acid.
(a) acid is found in fizzy soft drinks.
Known to alchemists as the oil of vitriol. Also known today as battery acid.
(a)
Vitamic C helps our body absorb (a) from food.
Gastric juice is a solution containing about ______ hydrochloric acid.
0.3%
0.5%
0.6%
0.8%
Fermentation is a metaboilc process that converts sugar to (a)
Helpful bacteria that help in food digestion are called (a)
A low pH favours the growth of yeast and fungus.
True
False
The bacteria which are related to the sour taste in spoiled foods are _______ bacteria, which can live without oxygen.
microbial
anaerobic
H.coli
viral
Low GI foods take longer to digest and help you feel full and satisfied for longer.
True
False
(a) , a Greek philosopher, used vinegar for cleaning wounds over 2000 years ago.
All disease starts in the (a)
الخل يسكن المرار و يحيي القلوب
What does 'maraar' mean?
(a)
(a) is an enzyme secreted by the kidneys that causes blood pressure to increase.
