อยากได้แบบฝึกหัดฟรีนับพัน (ไม่มีสิ่งรบกวนเลย)? Here’s how
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Chemistry
Practise on determining the number of proton chemical environment.
one question with math formulas to fill in
heat change, neutralisation
reactions chemistry
addition reactions
a quick review of substitution and elimination
identify particle diagrams and classify them by matter type
physical properties:hardness,freezing point
Type of reaction:Elimination reaction Name of reaction: Dehydration of alcohol
dsgfdhdfgdhfg
Radioactive decay
sự điện li, axit, bazo
Some basic concept of chemistry
Determining substances that can form hydrogen bond
Test-chemistry-1
Test-eex-21
quiz on ionic bond
Block, Period, Group
Name the salts
Worksheet on Physical Properties and Changes
test eex18