What is uses of crucible and cover?

Answer 1

a crucible is a small cup-like object used in chemistry because it can resist very high temperatures.

I'm not sure about the cover bit. perhaps an object made of the same material used to cover a crucible?

Answer 2

البوتقة عبارة عن إناء على شكل الفنجان يستعمل في المختبرات الكيميائية وذلك لكي يحوي العينات المخبرية عند تسخينها لدرجات حرارة مرتفعة، على سبيل المثال عند وضع العينات في المرمدة.

تستخدم البوتقة أيضاً من أجل سكب مصهور الفلزات.

يجب أن تكون البوتقة ثابتة تجاه الحرارة والمركبات الكيميائية، لذلك تصنع غالباً من السيراميك وفي بعض الأحيان من الفلزات.

غالبا يتم يستخدم غطاء مع البوتقة لمنع تطاير العينات منها، كما يستعما حامل معدني (ملقط) لتجنب تلامس البوتقة الساخنة أثناء إخراجها من الفرن.

Answer 3

A crucible is a type of laboratory glassware designed to melt or burn solid chemicals over a burner. Made from heat-resistant ceramic or metal, they'll withstand high temperatures up to 1050° Fahrenheit.

Answer 4

A crucible and cover is used to hold small amounts of chemicals during heating at high temperatures. The lid covers the bowl so nothing escapes, or to keep oxygen out of the reaction.

Answer 5

A crucible is a small container made from platinum or platinum alloys, zirconium, steel, ceramics used for calcination at high temperature, melting etc; the crucible may have a cover it is necessary.

Answer 6

The crucible and his cover are used for calcination and melting at high temperatures. It is a container very frequently used in chemical laboratories; big crucibles are also common in industry.

Answer 7

used to hold and heat small amounts of chemicals

Answer 8

The crucible is used for heating small quantities to very high temperatures.

Answer 9

used to hold chemicals and powder to be heated.

Answer 10

The most important uses of a crucible are:

- calcination of substances

- melting

The cover is used to protect the content of the crucible from contamination.