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प्रश्न
Differentiate between elements and compounds.
फरक स्पष्ट करा
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उत्तर
| Elements | Compounds |
| An element is the simplest substance | A compound is a chemical substance formed by the combination of two or more elements |
| Elements combine to form compounds | Compounds can be split into elements |
| Atoms are the fundamental particle of an element | Molecules are the fundamental particles of a compound |
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संबंधित प्रश्न
Name the technique that you use if only the solid component of a solution is required.
Name: a Metal Which is brittle
Define:
Atomicity
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Match the statements in List I – 1 to 10 correct answers in List II-A to J.
| List I | LIst II | ||
| 1 | Fluorine and chlorine | A | Nitrogen |
| 2 | A diatomic molecule | B | Boron |
| 3 | A molecule containing the elements hydrogen and oxygen. | C | Reactants |
| 4 | A metalloid - showing properties of both metals and non-metals. | D | Chemical Formula |
| 5 | The term used for the substances which take part in the chemical reaction | E | Halogens |
| 6 | The term represents a substance by means of symbols. | F | Water |
| 7 | The term used for the substances formed as a result of a chemical reaction | G | Nitric Acid |
| 8 | A compound containing one atom of zinc and two atoms of chlorine. | H | Products |
| 9 | The chemical name for nitrogen monoxide. | I | Phosphorus |
| 10 | A polyatomic molecule. | J | Zinc Chloride |
Select the correct answer from A, B, C, D & E for the statement given below :
A metalloid.
Select the correct answer from A, B, C, D & E for the statement given below :
A noble gas.
Match the following.
| 1. | Element | Made up of molecules |
| 2. | Compound | Impure substance |
| 3. | Colloid | Settles down on standing |
| 4. | Suspension | Pure substance |
| 5. | Mixture | Made up of atoms |
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
Higher-Order Thinking questions:
Why is hydrogen considered an element?
