Home working Flashcards
what is the mass number of an atom?
The total number of proteins and neutrons in the atom
Ionic compounds occur between…
positive and negative atoms
covalent compounds occur between…
non-metals only
What are the two types of covent bond structures?
simple molecular structures
giant covalent structures
what three covalent compounds are found in giant covalent structures?
diamond graphite and silicon dioxide
How many bonds are in between Dimond atoms diamond?
each carbon atom is bonded to four other carbon atoms.
how many bonds hold graphite together?
each carbon atom is bonded to three other carbon atoms
what is a property of alloy meals?
They are not malleable, they are very hard
What effects the rate of reaction?
surface area temperature catalysts pressure concentration
what is electrolysis used on only?
ionic substances
what is oxidisation?
Loss of electrons
what is reduction?
Gain of electrons
