CHEMISTRY (CHAPTER 3) Flashcards
(26 cards)
Vitamin C is also known as:
Ascorbic acid
Functions of ascorbic acid:
keeps your skin healthy and helps to make bones.
Vinegar acid is also known as:
Ethanoic acid
Acids from oily fish or soya beans:
Omega-3 fatty acid
Acid in the stomach helps to digest food
Hydrochloric acid
Acid helps to make bees and stings painful
Methanoic acid
Acid for flavor and as a preservative
Carbonic acid
Fizzy drinks contain:
Carbonic acid
Common acids in the laboratory are:
-nitric acid
-sulphuric acid
-hydrochloric acid
Acids can be diluted with___
water
If you spill acid on the skin, ______________________________________
wash the area with lots of water (water dilutes the acid)
Many__________ contains alkalis
cleaning products
Alkalis products often feel __________
soapy
Write the name of 3 laboratory alkalis
-sodium hydroxide
-potassium hydroxide
-ammonium hydroxide
A small splash of strong alkali on your skin results in a ____________
nasty blister
If strong alkalis get into your eyes, it may cause ________
blindness (Always put an eye protection when using alkalis)
Functions of sodium hydroxide:
-make paper and detergents
used in the process of aluminium production
Draw the symbol that means corrosive:
look textbook
When you handle acids and alkalis, you should:
-Wear safety goggles and gloves to protect your eyes and skin
-Remove the cap of the bottle and place it upside down on the work surface, so that the acid does not get onto the surface, or any dirt gets into the acid
-Replace the cap as soon as you finish using the bottle. This prevents spills and placing the wrong cap on the wrong bottle
Examples from pH 0-14
0-battery
1-stomach acid
2-lemon
3-vinegar
4-tomato
5-coffee
6-milk
7-water
8-blood
9-baking soda
10-stomach tablets
11-ammonia solution
12-soap
13-bleach
14-drain cleaner
The pH scale ranges from ______
0 to 14
The pH of an acids is_____________________
less than 7. The lower the pH, the more acidic the solution.
The pH of an alkali is________________________
more than 7. The higher the pH, the more alkaline the solution.
Pure water pH is________, which is______.
7, neutral
