Chemistry - End Of Year Flashcards
What is filtration for?
to separate substances that are insoluble in a particular solvent from those that are soluble in the solvent.
The atomic structure is…
electrons surrounding a nucleus that contains protons and neutrons.
Which is negatively charged?
Electron
Protons and electrons are … charged
Electrically
Which is positively charged?
Proton
Which is neutral?
Neutron
The number of protons in an atom is called …
Atomic number
What is an isotope?
Different form of the same element. It has the same number of protons but a different number of neutrons.
What is a compound?
A substance made up of two or more elements, chemically bonded
What is an atom?
Smallest component of an element
What is an element?
A substance consisting of atoms which have the same number of protons etc.
What is a mixture?
A substance made up of two or more elements, not chemically bonded
Equation of relative atomic mass (Ar)
Sum of (isotope abundance X isotope mass number) / sum of abundances of all isotopes
The top number of an element is the..
Mass number
The bottom number of an element is the..
Atomic number
