Home / G2 Science (Chemistry) / G2 Science (Chemistry) Matter and Bonding · question set Exit to G2 Science (Chemistry) G2 Science (Chemistry) Matter and Bonding · question set Try K223/K225 Matter and Bonding exam-style questions. Particle theory, atomic structure, ionic bonding and simple covalent structures. Diffusion, metallic bonding and giant covalent structures are excluded.
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Which statement gives the complete definition of matter?
Anything that can be seen Anything that has mass and occupies space Anything that can be weighed but has no volume Anything that moves or transfers energy Which statement is the central claim of kinetic particle theory?
Matter is continuous and has no smaller parts Matter consists of particles that are in continual motion Only particles in gases are able to move Thermal energy is a material stored in the gaps between particles Which statement is the correct definition of a change of state?
A chemical reaction that forms a new substance A physical transition between solid, liquid and gas without forming a new substance A change that can only happen when boiling A process that always increases temperature Which statement defines an atom?
The smallest particle of a compound The smallest particle that retains the identity of an element A particle made only of protons and neutrons A particle that always has a charge Which definition of an isotope is correct?
Atoms with the same nucleon number but different proton numbers Atoms with the same proton number but different nucleon numbers Atoms with different numbers of electrons only Atoms of different elements with the same mass Which is a ground-state electron arrangement of a neutral atom among the first 20 elements?
Which statement defines an element?
A pure substance containing only one type of atom that cannot be broken down by chemical methods Any substance whose particles occur as single atoms A substance containing two elements in a fixed ratio A material that cannot be separated by filtration Which definition of ionic bonding is mark-scheme correct?
Sharing of electrons between atoms Strong electrostatic attraction between oppositely charged ions Attraction between nuclei and shared electrons Weak attraction between molecules Molten sodium chloride conducts electricity because:
Electrons move through the liquid Ions become mobile and carry charge The ions disappear The lattice becomes covalent Which definition of covalent bonding is mark-scheme correct?
Strong electrostatic attraction between oppositely charged ions Strong electrostatic attraction between nuclei and a shared pair of electrons Transfer of electrons from a metal to a non-metal Weak attraction between molecules Which statement about conductivity is correct?
All covalent substances conduct when molten Simple covalent molecules do not conduct because there are no mobile ions or electrons Covalent substances conduct because electrons are always free to move Ionic substances do not conduct when molten A heating graph shows a simple molecular solid melting while its molecules remain chemically unchanged. Which energy account fits the evidence?
Because covalent bonds within molecules are weak Because only weak intermolecular forces between molecules are overcome on melting Because they are ionic Because they have mobile electrons