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primary 5 | Maths
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Date Posted: 5 years ago
Views: 220
there is air trapped below the red ink inside the flask.
when heated, air would expand.
since the air is trapped inside flask and it needs to expand, the air expands and pushes the ink upwards.
when heated, air would expand.
since the air is trapped inside flask and it needs to expand, the air expands and pushes the ink upwards.
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