Topics 7,8,9 Flashcards
Which fruits contain citric acid?
Oranges and lemons
What do acids taste like?
Sour
What do bass feel like?
Soapy and slippery
What givewhat gives coffee its bite taste and why?
Caffeine because it’s a base
What is the scientific name for vinegar?
Ethanoic acid
How do you make vinegar from wine?
You leave wine out in an open bottle for a few days and it will turn sour the oxygen from the air makes the wine acidic
What is the taste of sour milk caused by
Lactic acid
List a few natural acids
Citric acid in fruits Ethanoic acid ,in vinegar Lactic acid, sour milk Carbonic acid, found in fizzy drinks. Hydrochloric acid,in stomach juices
Give tw examples of strong acids
Hydrochloric acid
Sulfric acid
What do metals look lik
Thy are shiny
What do non-metals
Dull
What what is a metals state of matter?
Mostly solids except mercury, which is a liquid
What is a non metals state of matter
Gas,liquid and solid
What type of conductor is a metal
Good conductor
What type of conductor is a semi metal?
Poor conductor
What type of hat conductor is a metal
Good conductor
What type of heat conductor is a non metal
Poor conductor
What metals are magnetic
Iron, cobalt and nickel
What non metals are magnetic
None are magnetic
How malleable are metals
Can bend without breaking
How malleable are non metals
Connor bend without breaking
Are metals ductile ?
Yes can be stretched out into a thin wire
Are non metals ductile
Cannot be stretched out
What is the melting point of a metal
It’s a high melting point most metals are solid at room temperature
What melting point does a non metal have
Low melting point
What are semi metals
Semi metals are in the region between metals and non metals in the periodic table
What is the most common semi metals
Silicon
What is a group in the periodic table
The horizontal Colm
What is a period in the periodic table
Th vertical column
Are semi metals ductile and malleable
No
Can semi metals conduct electricity?
Yes, but no as well as well as metals they are called semi metals
What is a strong base
Magnesium oxide , used to treat indigestion
Bicorbonate of soda.
What are the properties of bases
Taste bitter
Feel slippery on the skin
Many bases are corrosive and caustic
What is a neutrals
They are neither acids o bases
What is an example of a neutral
Slat solution sugar solution and cooking oil
