My cards Flashcards
(16 cards)
What is an element?
A element is a substance composed of a single kind of atom.
what is a compound?
A compound is two or more atoms combined.
What is a mixture?
A mixture is two or more substance mixed together but not chemically bonded.
What is fuel?
Fuel is a material such as gas oil coal that is burnt to make heat or power.
How many groups are there in the periodic table?
There is 8 groups in the periodic table.
What is another word for burning?
Combustion.
What do we need to burn something?
Oxygen.
When we breath in do we inhale or exhale?
Inhale.
What is enzymes?
Enzymes is a special proteins that can break large musculus into small musculus.
What do metals react with>
Metals react with oxygen to produce compounds called metal oxides.
Which one of these are fuels? Coal, hydrogen, oil, gas, wax, wood, petrol.
Coal.
What is H2o knows as?
It is known as water.
Describe the difference between element, compound and mixture.
A element is a substance composed of a single kind of atom.A compound has two or more different kind of atom and a mixture is two or more substance chemically bonded.
Are there bonds in particular gases?
There are no bonds between the particles in a gas, so they are free to move in any direction.
Which fuels are fossil fuels?
Coal, fuel, oil or natural gas.
Where does the periodic table start?
It starts from the top reading left to right.
