Is Glass a Liquid?
8. Breaking Glass
Glass is relatively fragile so it pays to be careful when using it. Drop a glass milk bottle, for example, and you will likely have a mess to clean up. You will also be finding tiny shards that you missed for some time. Kids playing ball games around the home is also likely to turn into a tricky situation.
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Safety glass has been treated to help prevent the glass from cracking into dangerous shards, as well as helping to make it tougher to break. There is even glass that can resist bullets. When you do crack glass, you will likely find that the entire pane cracks at once. This is because a crack will move across the glass at 3,000 mph.
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