Ionic compounds have high melting points
when aqueous ionic compound do not conduct electricity
which of the ionic compounds is insoluble?
Barium nitrate
sodium sulfate
lead chloride
potassium hydroxide
barium nitrate can be used for x-rays
even though barium sulfate is toxic why is it safe to consume before x-rays?
it doesn't harm humans
it is insoluble
acid in the stomach neutralises it
it's only a small amount
what colour does potassium give off in a flame test?
violet
purple
lilac
RAINBOW
sodium gives off brown in a flame test
calcium gives off red in a flame test
what colour does copper produce in a flame test
yellow
black
blue
burgundy
which 2 from the list below are added to a solution to test for sulfate ions?
Dilute nitric acid
potassium chloride
barium chloride
dilute hyrdrochloric acid
what gas makes limewater go cloudy?
Hydrogen
carbon dioxide
methane
nitrogen
which 2 from the list below are added to a solution to test for chloride ions?
dilute nitric acid
dilute hydrochloric acid
Silver nitrate
sodium hydroxide
if i react lead nitrate and sodium chloride what will be the precipitate?
sodium nitrate
which of these is soluble?
barium sulfate
silver chloride
lithium hydroxide
sodium carbonate
ionic bonds have very strong electrostatic forces of attraction between oppositely charged ions
in a precipitate reaction why do i use distilled water rather than water?
distilled water makes the reaction happen quicker
distilled water allows the precipitate to be more visible when it's formed
distilled water has no ions that could interfere with the reaction
how many electrons would sodium lose if it reacted with chlorine?
1
2
3
4
which of these is insoluble?
Caesium carbonate
francium nitrate
rubidium sulfate
ammonium carbonate
spectroscopy can be used to identify elements
what colour is silver chloride?
beige
grey
white
