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Erstellt von kristy baker
vor etwa 9 Jahre
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ionic bonding happens between a ...
in ionic bonding the metal becomes ______ charged ion?
in ionic bonding the non-metal becomes a ______ charged ion.
how do oppositely charged ions arrange them selves in a giant ionic lattice?
2 properties of ionic compounds?
can ionic compounds conduct electricity when soild?
why do ionic compounds conduct electricity when they're liquids?
what type of elements does covalent bonding take place between?
are ions formed during a covalent bond?ni
what two methods are used to display atomic structure?
give three examples of simple molecules with covalent bonds.
simple molecules with covalent bonds have very ____A___ bonds between the atoms but much _____B_____forces holding the molecules together.
when you boil/melt water what breaks for it to change form?
what type of boiling and melting points do simple molecular substances have.
what state are most simple covalent molecules in at room temperature.
two features of a giant covalent structure?
describe graphite structure.
Two uses of graphite?
how strong are the forces between the layers of carbon in graphite?
what element is carbon made up of?
why does diamonds structure mean it is very hard and strong?
does diamond conduct electricity?
what is metallic bonding?
what does crystalline refer to?
what does this image show?
what do we need to know about delocalised electrons?
what do the free electrons allow metal atoms to do?
define malleable?
define ductile?
what would be different between two different isotopes of carbon?
what is the relative mass of a proton, neutron and electron?
how is the atomic mass of an isotope found as they all have different amounts of neutrons?
where is relative atomic mass (Ar) found?
where is relative formula mass (Mr) found?
what does the empirical formula tell us?
what is one mole of a substance?
what two things do you need to find the percentage of an element?
define theoretical yield?
define the actual yield?
define the percentage yield?
whats the equation used to find the percentage yield?
what do we use paper chromatography for?
explain the process of doing and setting up a paper chromatography experiment?
what would a suitable solvent for paper chromatography be?
what is an RF value?
how do you calculate the RF value?
what is retention time?
when does a chemical reaction take place?
define an activation energy?
what is a reaction time?
what is the rate of reaction's equation?
what are three factors that may affect the rate of reaction?
why might temperature affect the rate of reaction?
why might concentration/pressure affect the rate of reaction?
why might surface area affect the rate of reaction?
what is a catalyst?
one benefit of a catalyst?
does one catalyst work for every reaction?
how does a catalyst work?
what is an exothermic reaction?
what is an endothermic reaction?
in an endothermic reaction what happens to the surroundings?
in an exothermic reaction what happens to the surroundings?
in a reversible reaction if the forward reaction is exothermic then what is the backward reaction?
what does this sign mean?
what process is shown in the flow chart?
the haber process is used to make ammonia, what two elements does it require?
what can ammonia be used for?
the highest yield is gotten by using low temp and high pressure. why aren't these conditions used industrially?
what does the equation look like for making ammonia?
what is neutralisation?
what does an acid+base =?
what does an acid+metal oxide=?
what does an acid+metal hydroxide=?
what do most bases not do?
bases that dissolve in water are called something else. what is it?
what happens when an acid and a carbonate react?
when carbon dioxide is produced in a acid+carbonate reaction, what can be seen?
how do you make sure that its carbon dioxide?
two reactive metals that acid will react with?
when an acid reacts with a reactive metal what is produced?
what does hydrogen do during an acidic reaction?
how do you test for hydrogen?
