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WorksheetsACIDS BASES AND SALTS GRADE 7
Total questions: 20
Worksheet time: 15mins
Which of the following Statements are true about Acids ?
They are sour in taste and soapy to touch
They are sour in taste
Acids are present in Oranges, Ant sting, Vinegar etc.
Acids are present in Vinegar, Sugar, Soap etc.
A child got stung by a bee. Some of the Elders suggest to add Baking Soda or Lemon Juice. Which one do you think is Appropriate ?
Lemon Juice
Water
Baking Soda
None of the Above
Which of the following is an acid?
soap
baking soda
orange juice
pure water
What type of paper is used to test for acids and bases?
Red paper
Blue paper
Lined paper
Litmus paper
When the soil is too Basic, what do you add to neutralise the effect ?
Basic Quicklime
Phenolphthalein
Organic Matter
Nitric Acid
When do you take an Antacid ?
When you are Hungry
When the soil is too Acidic
When you have a Gastric problem in your stomach
When the Factory wastes are disposed in waterbodies
None of the Above
A child got stung by a bee. Some of the Elders suggest to add Baking Soda or Lemon Juice. Which one do you think is Appropriate ?
Lemon Juice
Water
Baking Soda
None of the Above
Before Factory wastes are disposed out to Waterbodies, why do they add basic substances ?
So that the Factory wastes decomposes in Waterbodies
Because they have Respect towards them
So that they do not harm the Aquatic animals and Plants
None of the Above
When the pH Scale is on 5, the Nature of the substance is -
Neutral
Acidic
Basic
None of the Above
When the pH Scale is on 7, the Nature of the substance is -
Acidic
Basic
Soluble
None of the Above
What pH range would you get for an Acid ?
0 - 6
7
7 - 14
2 - 10
Acid in car battery:
Hydrochloric acid
Sulfuric acid
Acetic acid
Carbonic acid
An indicator is?
A lab manual or guide
Something like litmus paper that can tell you if a substance is acidic or basic
A PS4 game where you pretend to direct traffic
Something only scientists in a lab can use
When you neutralize acid with a base you create
a Salt and water
You can not neutralize acid with a base
You create carbon dioxide
A moderate sized explosion
Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?
Lemon Juice - pH=2
Apple Juice - pH=4.5
Shower Cleaner - pH=5.5
Hydrogen Peroxide - pH=7
A lighted splint was held over a flask in which a gas was given off. The splint went out with a pop. Which gas was given off?
hydrogen
chlorine
oxygen
ammonia
