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WorksheetsG5A U7 How Things Dissolve
Total questions: 35
Worksheet time: 28mins
If a substance (thing) dissolves in water, it is called______.
water solution
saline solution
sugar solution
boric acid solution
What is the color of the solution in A?
clear/transparent
white
sticky syrup
yellow
What is the total weight of A?
200g
a little bit less than 200g
a little bit more than 200g
it is hard to tell
Which is CORRECT about the weight of salt in A?
The weight of salt does not change.
The weight of salt increases.
The weight of salt decreases.
It is hard to tell
Which is CORRECT about the salt in A after it is dissolved in water?
The salt is not in solution A.
The salt is still in solution A.
The salt evaporates from solution A
It is hard to tell.
Which beaker has more amount (number of spoons) of dissolved salt?
B
C
Both B and C
It is hard to tell.
Is there a LIMIT to the amount (number of spoons) of salt that DISSOLVES in water?
Yes
No
Maybe
It is hard to tell.
In C, some particles do not dissolve. What can you do to dissolve the particles?
You cannot dissolve the salt anymore.
Which is the correct EYE LEVEL to check the meniscus?
top
middle
bottom
all is okay
What is the water level in the graduated (measuring) cylinder?
45mL
46mL
47mL
47.5mL
Choose the correct way of pouring water to the graduated (measuring )cylinder.
Pour water until below下 the needed volume. Use a dropper スポイトto add more water until you reach the needed volume.
Pour water above 上the needed volume. Use spoon to remove more water until you reach the needed volume.
Both can be correct.
not in the choices
What can you do to fit the filter paper in the funnel?
Use water to let the filter paper stick onto the funnel.
Do not do anything to the filter paper.
Use rocks inside the filter paper.
Use glue or tape to stick the filter paper onto the funnel.
Which is the CORRECT way of pouring any liquid during filtering?
Both can be correct.
not in the choices
Which picture(s) show(s) the experiment(s) that can get back alum particles/crystals?
experiment 1
experiment 2
both experiments 1 and 2
not in the choices
Which WATER TEMPERATURE dissolves MORE alum?
A
B
C
temperature does not affect the amount of boric acid that dissolves in water
If we put the beakers in a 10 degrees Celsius area, which picture shows what happens to the alum in C?
Nothing will be recovered. Temperature does not affect the amount of boric acid that dissolves in water
If the temperature is 40 degrees Celsius, the amount of substances increases in_____?
C
D
it is hard to tell
If the WATER TEMPERATURE INCREASES, the AMOUNT of substance that dissolves in water also INCREASES in_____?
C
D
it is hard to tell
In 20 degrees Celsius, which will have more RECOVERED SUBSTANCES if the solutions are EVAPORATED?
C
D
it is hard to tell
If the water temperature DECREASES from 60 degrees Celsius to 20 degrees celsius, which will have more RECOVERED SUBSTANCES if the solutions are COOLED?
C
D
it is hard to tell
What is the Japanese word for WATER SOLUTION?
水よう液
食塩水
ホウ酸水
ミョウバン水
What is the Japanese word for SALINE SOLUTION?
水よう液
食塩水
ホウ酸水
ミョウバン水
What is the Japanese word for ALUM SOLUTION?
水よう液
食塩水
ホウ酸水
ミョウバン水
What is the Japanese word for a FUNNEL?
スポイト
ろ紙
ろうと
メスシリンダー
What is the Japanese word for a FILTER PAPER?
スポイト
ろ紙
ろうと
メスシリンダー
What is the Japanese word for a DROPPER?
スポイト
ろ紙
ろうと
メスシリンダー
What is the Japanese word for RECOVER or get back?
とり出す
残る物
とかす
とける
What is the Japanese word for RESIDUE?
とり出す
残る物
とかす
とける
What is the Japanese word for to DISSOLVE IN WATER?
とり出す
残る物
とかす
とける
What can you say about the experiments?
Dissolving and recovering substances are easy.
I do not remember most of the ideas in the experiments.
Dissolving and recovering substances are not easy.
The experiments are interesting but hard.
I remember most of the ideas in the experiments.
If you FILTER the remaining alum solution, does it still have DISSOLVED alum in it?
yes
no
both can be correct
it is hard to tell
If we put the beakers in a 10 degrees Celsius area, which picture shows what happens to the alum in B?
Nothing will be recovered. Temperature does not affect the amount of boric acid that dissolves in water
If we put the beakers in a 10 degrees Celsius area, which picture shows what happens to the alum in A?
Nothing will be recovered. Temperature does not affect the amount of boric acid that dissolves in water
How easy/difficult is this unit on salt and alum?
Very easy
Easy
Average
Difficult
Very difficult
Do you have any question/message about this unit on salt and alum solution?
