Atoms Flashcards
Describe why these gases diffuse [1]
random motion of molecules
Describe nucleon number [2]
total number of protons and neutrons
in the nucleus of an atom
Identify the particles in the air which cause the random movement of dust particles [2]
nitrogen/oxygen
molecules
Suggest the identity of a covalent compund with a higher mp than LiCL [1]
silicon (IV) oxide
Describe the bonding in iron [3]
positive ions
sea of electrons
electrostatic forces of attraction
Steel has small amount of carbon in iron. Explain why steel is less malleable than iron [2]
particles different sizes
layers cannot slide
What is a covalent bond? [2]
a shared
pair of electrons
Explain why chlorine does not react with aqueous sodium fluoride [1]
chlorine less reactive than fluorine
what type of structure does sodium chloride have? [1]
giant ionic lattice
Why do sodium ions have charge of +1? [1]
1 more proton than electrons
Phosphorus, P4, reacts with air to produce phosphorus (V) oxide, P4O10. What type of chemical reaction is this? [1]
redox/combustion
