scientific endavour
what is an indefinte variable?
changed variable
what is a definite variable?
measured variable
hypothesis is a statement of _________________
proposed explaination
what is a controlled variable?
constant variable
what is the difference between analogue and digital instruments?
the reading of digital is shown while we have to read the readings of an analogue
digital shows reading while analogue doesnt
units for length
m
cm
mm
km
what is the difference between a test tube and a boiling tube
a boiling tube is bigger than a test tube
unit for volume
m3
cm3
ml
unit for mass
g
kg
unit for time
hrs
s
min
how many mins are there in 1 h?
60 min
60
1 km = ? m
1000 m
1000
1 m = ? cm
100 cm
100
1 h = ? s
3600 s
1 km = ? mm
1 000 000
1kg = ? g
1000g
test tube is used for ____________.
holding chemicals
holding chemical
boiling tubes traits
curved base
transparent
boiling tube is used for holding chemicals for ___________.
strong heating
beaker's traits
flat surface
transparent
beaker is used for _________________
holding chemicals
mixing chemicals
holding liquids
mixing liquids
conical flask allows _____________
mixing liquids without spilling
conical flask traits
narrow mouth
transparent
flat bottom
flat bottomed flask allows ________________
mixing chemicals or preparing gases without heating.
flat bottomed traits
transparent
flat bottomed
round bottomed flask traits
transparent
round bottomed flask function
mixing chemicals or preparing gases with heating
what is a retord stand
used for supporting apparatuses
wire guaze used for___________
supporting apparatuses on a tripod stand
tripod stand is used for
supporting apparatus during heating
a burette or pipette is used for
measuring a specific amount of liqiud