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Atoms (Angela 2A)
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The number of _______ in the nucleus defines the type of chemical element and differentiates it from all other elements.
protons
A _________ substance is made up of atoms from different chemical elements.
compound
A ________substance is made up of atoms from the same chemical element.
simple
What element has the atomic symbol of K?
potassium
What is the atomic symbol of gold?
Au
What is the atomic symbol for silver?
Ag
What charge do neutrons have?
neutral/no charge
What charge do electrons have?
negative
What charge to protons have?
positive
The net electric charge of an ionised atom is called the _________ and it can be positive or negative.
oxidation number
An atom that has lost electrons is _________ ionised.
positively
An atom that has gained electrons is ____________ ionised.
negatively
When an atom gains or loses electrons, we say that it has been ________.
ionised
The process by which atoms gain or lose electrons is called __________.
ionisation
The _________ of an element is the average mass of the mass numbers of its isotopes according to their relative abundance.
atomic mass
An _________ of an element is an atom that has a different mass number to the standard of that element.
isotope
The __________ is the sum of the protons and neutrons in the nucleus of the atom.
mass number
The atomic ______ of an atom is the number of protons it contains in its nucleus.
number
We use atomic __________to summarise the information related to the internal composition of an atomm.
parameters
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