Acids and Alkalis Flashcards
What is the pH of a solution a measure of?
The pH scale is used to describe how acidic or alkaline a substance is.
What substance is used to work out the pH level of a solution?
- Universal indicator
2. Litmus paper
What colour indicates a neutral solution?
Light green
What is the pH for neutral solution?
pH 7
What colour indicates a very acidic solution?
Red
What pH level does an acidic solution have?
pH 0-6
What colour indicates a very alkali solution?
Purple
What pH level does an alkali solution have?
pH 8-14
What are the colours in the pH range 0-14
Rainbow colours
Give an example of something in the body that needs to be in alkaline conditions.
Small intestines
Give an example of something in the body that needs to be in acidic conditions.
Stomach
Explain in detail the effect increase in carbon dioxide is having on the ocean.
Carbon dioxide is making the ocean more acidic.
Give examples for acids pH1 pH2 pH3 pH4 pH5 pH6
Acids pH1 Hydrochloric acid pH2 Lemon pH3 Vinegar pH4 Tomatoes pH5 Bananas pH6 Potatoes
Give example for neutral
pH7
pH7 Water
Give examples for alkalis (bases) pH8 pH9 pH10 pH11 pH12 pH13 pH14
Alkalis pH8 Eggs pH9 Baking soda pH10 Hand soap pH11 Ammonia pH12 Bleach pH13 Oven cleaner pH14 Sodium hydroxide - NaOH
