C2 Chemistry - properties of ionic compounds

Question 1

when does an ionic bond form?

Answer 1

when a metal reacts with a non metal

Question 2

what are the two properties of ionic compounds?

explain why?

Answer 2

high melting and boiling points
-ionic bonds are strong, lots of energy to break them

conductive when liquid
-they can only conduct when their ions move freely, not when they are solid

Question 3

what properties does graphite have? 3

Answer 3

insoluble in water
high melting point
conducts electricity

Question 4

what are the characteristics of graphite (what does it look like?)

Answer 4

black and opaque

slippery

Question 5

why is graphite slippery?

Answer 5

it contains layers of carbon atoms that move over each other easily cus there are only weak forces between them

Question 6

what are diamonds properties? 5

Answer 6

hard
colourless and clear 
high melting point 
insoluble in water 
does not conduct electricity

Question 7

why do diamonds not conduct electricity?

Answer 7

they have no free electrons to move around freely

Question 8

why do metals have high boiling and melting points?

Answer 8

their particles are help together by strong metallic bonds which makes them hard to break up, needs lots of energy