Atoms are made from protons, neutrons and electrons. The periodic table arranges elements according to their atomic size and other properties.
What is the centre of an atom called?
What is the charge on an electron?
Which of the three sub-atomic particles is the lightest?
If atoms contain charged particles, why do they not have a charge?
They contain the same number of protons as electrons
The charge is locked away in the nucleus
They contain equal numbers of protons and neutrons
What is the atomic number of an atom equal to?
The number of protons in the nucleus
The number of neutrons in the nucleus
The numbers of protons and neutrons in the nucleus
Where are the electrons inside an atom?
The electrons are in the nucleus of an atom
They are arranged in energy levels
The electrons are spread equally throughout the atom
Which elements have similar chemical properties?
Elements in the same period of the Periodic Table
Elements with the same number of electrons in their outer energy level
Elements with similar mass numbers
How many neutrons does this atom of carbon have?
What are isotopes?
Compounds with the same molecular formulae but different structural formulae
Atoms with the same mass number but different atomic number
Atoms with the same number of protons but a different number of neutrons
Hydrogen has three isotopes and a relative atomic mass of 1.0079. Which isotope is the most abundant?
Hydrogen with atomic mass of 1
Hydrogen with atomic mass of 2
Hydrogen with atomic mass of 3