Matter And Material Flashcards
Give 5 examples of acids
Lemon juice Fizzy drink Fruit juice Pool acid Vinegar
Give 4 examples of bases
Soap
Bleach
Washing powder
Household cleaners
Give 5 examples of neutrals
Water Salt Sugar Cooking oil Sugar solution
What is a neutral substance
Neutrals substances are neither acids nor bases
What is an acid
A substance with a sour taste
What is a base
A substance with a bitter taste and a slippery feel
Bases have what properties
:They taste bitter
:They feel slippery and soapy on the skin
:Many are dangerous to taste or feel because they are corrosive
Properties of acids
:They taste sour
:they feel rough on the skin
:many are dangerous to star or feel because they are corrosive wich m and they can burn or damage your skin and corrosive substances eat away other materials
Corrosive
Attacks other materials or substances
Alkali
A base that dissolves in water
Neutral
A substance that is not an acid or base
What can you use to indicate if a substance is an acid or base
Blue litmus paper wich turns wich turns red in acids and red litmus paper wich turns blue in base
Dumped waste can be a huge problem post factors we should consider
:We suppose you’d be more carefully with items we purchase
:we should by less plastic and use fewer chemicals
:make compost heaps from organic waste
:we must recycle responsibly
Dumbest waste causes huge problems and discuss
Pollution effects our water soil and environment from all the harmful chemicals that are just dumped and water has harmful chemicals from the manufacturing process of ore and that water is just dumped in rivers and pollution destroys our ozone layer and blockage iN sewage and drainage systems wich cause flooding wich make breeding grounds for mosquitos and mosquitoes infect thousands of people with malaria and they also they infect the water and it’s also harmful to humans causing breeding grounds for diseases like cholera and dysentery and landfill sites remain underdeveloped because nobody wants to live there
What are problems with plastic
:They are not biodegradable and they survive for hundreds day of years unless burnt
:burning plastics release toxic gases or harmful chemicals
:plastic ends up in our seas and oceans killing our sea life either getting tangled in them or eating them
What are the physical properties
Strength,flexibility,melting points ,boiling points,heat conductivity,electrical conductivity
What is a physical property
The way In wich a substance or materials behaves
What colour is copper
Brown and orange
What should we consider when we select materials
Cost and colour and texture
3 examples of physical materials
Paper
Plastic sheeting
Fabric
What tempretures does rock melt at
700 to 1300 degrees
What do boiling and melting points tell us about a material
If they are normally in a gas liquid or solid state
What are special features of water
Water is normally a liquid but we also see it and a solid in ice and in a gas state wich is water vapor wich condenses from clouds and water melts at 0 degrees and boils at 100 degrees
What tempretures does salt boil and melt at
What tempretures does lead boil and melt at
What tempretures does ethanol boil and melt at
Melts 800 degrees Boils at 1465 Melts 375 Boils Melts 78 Boils
What is a mixture
It’s a materials wich are made up of two or more substances wich have different physical properties
Name mixtures in air
Nitrogeon
Oxygen
Little carbon dioxide
What mixtures make saw water
Salt
Water
What mixtures make
Like,cement,sand and water
Brass is mixture of what
Copper and zinc
Define the term filtration
A method of separating mixtures with using the properties of size
Lost the mad storing methods of separation
Filtration Sieving Magnet Hand sorting Distillation Chromatography Evaporation
Wich metals are not attracted by a magnet
They are aluminum and copper
How many tastes does your tongue have
Four
What does your tongue taste
Bitter
Sour
Sweet
Salty
What does corrosive mean
It attacks materials and substances
List 5 products made from crude oil
Petroleum jelly Paraffin Candles Petrie Tar
Define chromatography
A method of separating mixtures of dissolved substances like dyes
What is a solid Wayne deposit
We’re people can drop off builders rubble and garden refuge and recyclable materials and electronic waste
Why is it important to recycle
We reduce the amount of rubbish wich ends up pulled on top of more rubbish dumps or buried in landfill sites wich generate methane gas as the rubbish breaks down and we save our natural resources like metals wich are used to make tins and oils wich are made to make plastics
Name a greenhouse gas
Carbon dioxide
What materials are suitable for recycling
Metals
Plastic
Glass
Paper
