2537080
Frage 1
Frage
Ionic compounds have high melting points
Antworten
- True
- False
Frage 2
Frage
when aqueous ionic compound do not conduct electricity
Antworten
- True
- False
Frage 3
Frage
which of the ionic compounds is insoluble?
Antworten
-
Barium nitrate
-
sodium sulfate
-
lead chloride
-
potassium hydroxide
Frage 4
Frage
barium nitrate can be used for x-rays
Antworten
- True
- False
Frage 5
Frage
even though barium sulfate is toxic why is it safe to consume before x-rays?
Antworten
-
it doesn't harm humans
-
it is insoluble
-
acid in the stomach neutralises it
-
it's only a small amount
Frage 6
Frage
what colour does potassium give off in a flame test?
Antworten
-
violet
-
purple
-
lilac
-
RAINBOW
Frage 7
Frage
sodium gives off brown in a flame test
Antworten
- True
- False
Frage 8
Frage
calcium gives off red in a flame test
Antworten
- True
- False
Frage 9
Frage
what colour does copper produce in a flame test
Antworten
-
yellow
-
black
-
blue
-
burgundy
Frage 10
Frage
which 2 from the list below are added to a solution to test for sulfate ions?
Antworten
-
Dilute nitric acid
-
potassium chloride
-
barium chloride
-
dilute hyrdrochloric acid
Frage 11
Frage
what gas makes limewater go cloudy?
Antworten
-
Hydrogen
-
carbon dioxide
-
methane
-
nitrogen
Frage 12
Frage
which 2 from the list below are added to a solution to test for chloride ions?
Antworten
-
dilute nitric acid
-
dilute hydrochloric acid
-
Silver nitrate
-
sodium hydroxide
Frage 13
Frage
if i react lead nitrate and sodium chloride what will be the precipitate?
Antworten
-
sodium nitrate
-
lead chloride
Frage 14
Frage
which of these is soluble?
Antworten
-
barium sulfate
-
silver chloride
-
lithium hydroxide
-
sodium carbonate
Frage 15
Frage
ionic bonds have very strong electrostatic forces of attraction between oppositely charged ions
Antworten
- True
- False
Frage 16
Frage
in a precipitate reaction why do i use distilled water rather than water?
Antworten
-
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
Frage 17
Frage
how many electrons would sodium lose if it reacted with chlorine?
Antworten
-
1
-
2
-
3
-
4
Frage 18
Frage
which of these is insoluble?
Antworten
-
Caesium carbonate
-
francium nitrate
-
rubidium sulfate
-
ammonium carbonate
Frage 19
Frage
spectroscopy can be used to identify elements
Antworten
- True
- False
Frage 20
Frage
what colour is silver chloride?
Antworten
-
beige
-
grey
-
white
-
yellow
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