WorksheetsC1 Atomic Structure Quiz
Total questions: 20
Worksheet time: 10mins
Which sub-atomic particles were NOT included in Dalton’s model of the atom?
Protons, neutrons, and electrons
Electrons, protons, and quarks
Neutrons, electrons, and photons
Protons, neutrons, and positrons
What did the alpha scattering experiment reveal about the structure of the atom?
Atoms are made only of electrons and protons
Electrons orbit the nucleus at fixed distances
Atoms are solid spheres with no internal structure
Most of the atom’s mass and positive charge is concentrated in a small nucleus
Which statement best describes the difference between elements and compounds?
Elements are always gases, while compounds are always solids
Elements are made of molecules, while compounds are made of ions
Elements are made of one type of atom, while compounds are made of different types of atoms chemically bonded together
Elements can be separated by physical processes, while compounds cannot
How does the Bohr model describe the arrangement of electrons in an atom?
Electrons are randomly distributed throughout the atom
Electrons orbit the nucleus at fixed distances called shells or energy levels
Electrons are only found inside the nucleus
Electrons are paired with neutrons in the nucleus
Given the relative charges of protons, neutrons, and electrons, what is the overall charge of a neutral atom?
Zero, because the total negative charge from electrons equals the total positive charge from protons
Positive, because protons outnumber electrons
Negative, because electrons outnumber protons
Neutral, because neutrons balance the charge of protons and electrons
What is Dalton’s model of the atom?
Atoms as solid spheres that could not be divided into smaller parts
Sphere of positive charge with negative electrons embedded in it
Dense nucleus with electrons orbiting it
Electrons orbit in fixed energy levels (shells)
How can you calculate the number of neutrons in an atom?
Atomic number + mass number
Mass number – atomic number
Number of electrons – atomic number
Atomic number – number of protons
Why do atoms have no overall charge?
They have more protons than electrons
They have equal numbers of positive protons and negative electrons
They have more neutrons than protons
They have no sub-atomic particles
Describe the nuclear model of the atom.
Atoms as solid spheres
Sphere of positive charge with negative electrons embedded in it
Dense nucleus with electrons orbiting it
Electrons orbit in fixed energy levels (shells)
What are the four physical processes that can be used to separate mixtures?
Filtration, crystallisation, distillation, chromatography
Filtration, evaporation, melting, freezing
Distillation, filtration, combustion, oxidation
Chromatography, melting, boiling, filtration
Which scientist proposed the plum pudding model of the atom?
J.J. Thomson
Niels Bohr
John Dalton
Ernest Rutherford
What is the main difference between a mixture and a compound?
Compounds are made of only one type of atom
Mixtures can be separated by physical processes, compounds cannot
Compounds can be separated by filtration
Mixtures always contain water
Which sub-atomic particle determines the atomic number of an element?
Neutron
Electron
Proton
Photon
Which scientist is credited with discovering the electron?
Ernest Rutherford
John Dalton
J.J. Thomson
Niels Bohr
What is the charge and location of a neutron in an atom?
Negative, in the nucleus
Positive, in the electron cloud
Positive, outside the nucleus
No charge, in the nucleus
Which process is commonly used to separate a soluble solid from a liquid?
Filtration
Evaporation
Chromatography
Distillation
Which sub-atomic particle has a positive charge and is found in the nucleus?
Photon
Neutron
Proton
Electron
Who is credited with the discovery of the nucleus in the atom?
J.J. Thomson
Ernest Rutherford
Niels Bohr
John Dalton
Which process would you use to separate a mixture of sand and salt?
Filtration followed by evaporation
Chromatography
Distillation
Crystallisation
Which sub-atomic particle is responsible for the chemical properties of an element?
Electron
Photon
Neutron
Proton
