1.If the air hole is not closed when lighting the Bunsen Burner,_______________
may occur and you will hear a hissing sound.
2. In summer, the _____________ in Hong Kong can be over 35℃. The symbol '℃' stands for _______________. The reading can be measured by a _____________.
3.The ________ of an object is the space it occupies. It is usually measured in ________centimetre(cm3).
4.Some liquid is poured into a container. The curved liquid surface is called the ___________.
5.We use a triple beam balance or a lever balance to measure__________.
THX~~~~~