True or false: after glassware is heated it should be allowed to cool to
room temperature slowly.

True

Explanation:

Glasswares are glass-made substances that cannot be done without in the laboratory. They are used to hold and store chemicals, conduct chemical reactions etc. Common glasswares include conical flask, beakers, test tubes, volumetric flasks, pipette etc.

These glasswares are sometimes used to hold chemicals that needs to be heated, making the glasswares hot as well. Since they are made of glass materials, they are very fragile and must be handled carefully. One of the precautions when handling a glassware is that after hearing, they must be allowed to cool down slowly at room temperature in order to avoid breakage. Hence, the statement is TRUE.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

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