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