AQA unit 1 Chemistry Flashcards
What is an element
A substance made of one type of atom
What is a compound
A substance made of two or more types of atom chemically bonded together
What is a mixture
Two or more elements and compounds not chemically bonded together
Is oxygen an element compound or mixture
Its an element
Is carbon dioxide an element, compound or mixture
A compound
Is air an element, compound or a mixture
A mixture
How many carbon atoms are in CO2
One carbon atom
How many chlorine atoms are in A13Cl6
Six chlorine atoms
How many different elements are in C6H12O6
Three different elements(carbon,hydrogen,oxygen)
What is the centre of an atom called
The nucleus
Where are three subatomic particles in an atom
Protons, electrons and neutrons
Where are protons and neutrons located in the atom
In the nucleus
Where are electrons located
In the shells
What is the charge of a neutron
zero
What is the mass of a proton, electron and neutron
hint PEN 101
1,0,3
How many electrons can you fit in the first three
shells?
2, 8, 8
Who came up with the plum pudding model
JJ Thompson
Who said that the atom had a dense nucleus with electrons in orbit
Ernest Rutherford
Who said that the electrons were in shells
Niels Bohr
Who discovered the neutron
Chadwick
What are the elements in group 1 called
Alkali metals
What are the elements in group 7 called
Halogens
What are the elements in group 0 called
Noble gases
Why are the noble gases unreactive
They all have a full outer shell
