Name the three subatomic particles in an atom.
Name the two subatomic particles in the nucleus.
State what is shown in a predator-prey graph.
State what is meant by the resoltution of an instrument.
Give 20,000 in standard form.
Challenge: define an isotope.
What is the charge, relative size and location of a proton?
What is the charge, relative size and location of a neutron?
What is the charge, relative size and location of an electron?
What is the radius of an atom?
What is the radius of a nucleus?
Define atomic number.
Define atomic mass number.
Define isotope.
What is the charge, relative size and location of a proton?
What is the charge, relative size and location of a neutron?
What is the charge, relative size and location of an electron?
What is the radius of an atom?
What is the radius of a nucleus?
Define atomic number.
Define atomic mass number.
Define isotope.
What is the relative charge of a:
(i) proton
(ii) neutron
(iii) electron
What is the relative mass of a:
(i) proton
(ii) neutron
(iii) electron
Define "atomic number".
What is the approximate radius of:
(i) a nucleus
(ii) an atom
Define "isotope".
Step 1: find boron on the periodic table and write out the symbol with atomic and mass number. Label the mass number and atomic number
Step 2: Determine the number of protons Identify the atomic number - this is the number of protons
Step 3: Determine the number of electrons In an atom the number of electrons = the number of protons
Step 4: Determine the number of neutrons number of neutrons = mass number – atomic number
Step 1: find aluminium on the periodic table and write out the symbol with atomic and mass number. Label the mass number and atomic number
Step 2: Determine the number of protons Identify the atomic number - this is the number of protons
Step 3: Determine the number of electrons In an atom the number of electrons = the number of protons
Step 4: Determine the number of neutrons number of neutrons = mass number – atomic number
Define mass number
What is an isotope?
What does the aotmic number tell us?
What is the raduis of an atom?
What is the radius of a nucleus?