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WorksheetsS1NTC1: Lab Measurements and Procedures
Total questions: 8
Worksheet time: 11mins
Which of the following should not be done when in a laboratory?
Wear safety glasses
Wash hands after experiment
Smell chemicals directly
Inform teachers if things break immediately
When measuring length, our eyes should be directly (a) the marking.
We (b) read at an angle to ensure there is no error.
To find length, use (c) to minus (d)
What are the steps to light a bunsen burner?
Connect rubber tubing to bunsen burner
Close air hole
Turn on gas tap
Light bunsen burner with lighter (yellow flame observed)
Open air hole (blue flame observed)
Organize these options into Blue or Yellow flame
hotter
Less hot
Smaller in size
Larger in size
Flickers
Happens when enough air is mixed with gas stream
Steady flame
Visible blue color
Visible yellow color
Happens when less air is mixed with air stream
Which of the following is not a Hazard sign?
Corrosive
Flammable
Irritant
Toxic to environment
Non Waterproof
Match the following physical quality to its measuring instrument
Measuring cylinder
Volume
Electronic balance
Mass
Ruler/
Measuring tape
Length
Laboratory Thermometer
Temperature
Digital stopwatch
Time interval
Why do we need to use estimation in our daily life?
we may not have a measuring device wherever we go
we think it is better to estimate
we are lazy
Length changes at different places
Labels the parts of a stopwatch.
Minutes (min)
Seconds (s)
Milliseconds (ms)
