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प्रश्न
Define: Formula
व्याख्या
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उत्तर
Formula: Formula is a short way of representing the molecule of an element or a compound
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Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
State four differences between compounds and mixtures.
Give three differences between metals and non-metals.
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Write the names of elements from the following symbol:
Zn
Write the names of elements from the following symbol:
Si
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Name the element which is used for making computer chips.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
