Class 7ScienceAcids, Bases and Salts
Bases and Alkalis
Bases taste bitter, feel soapy. Turn red litmus BLUE. Alkalis = soluble bases. Examples: NaOH (sodium hydroxide โ caustic soda), Ca(OH)โ (lime water), Mg(OH)โ (milk of magnesia โ antacid), NHโ (ammonia โ in cleaning products). Uses: baking soda (NaHCOโ) for cooking, washing soda (NaโCOโ) for laundry.
10 examples
Concept check 1
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on concept check and show the working clearly.
Definition to application 2
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on definition to application and show the working clearly.
Formula warm-up 3
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on formula warm-up and show the working clearly.
Reasoning practice 4
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on reasoning practice and show the working clearly.
Board-style short answer 5
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on board-style short answer and show the working clearly.
Mistake correction 6
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on mistake correction and show the working clearly.
Visual interpretation 7
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on visual interpretation and show the working clearly.
Applied word problem 8
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on applied word problem and show the working clearly.
Revision challenge 9
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on revision challenge and show the working clearly.
Exam recap 10
For Class 7 Science, explain or solve a bases and alkalis question from the chapter "Acids, Bases and Salts". Focus on exam recap and show the working clearly.