Question

difference between elements and compounds
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Answer 1

Explanation:

ELEMENTS- they consists of only one type of atoms

COMPOUNDS- two or more atoms combine to form Compounds

Answer 2

Answer:

• Elements are pure substances which are composed of only one type of atom.

• Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions.

1 Definition

• Elements are pure substances which are composed of only one type of atom.
• Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions.

2 Total Numbers

• There are nearly 118 elements (at present) of which nearly 94 occur naturally on Earth.
• Compounds are almost endless.

3 Types

• Elements are classified as either metals, nonmetals or metalloids.
• Compounds are classified according to their bonds which can be ionic, molecular or metallic.

4 Examples

• Some of the examples of elements are Iron, Copper, Gold, etc.
• A few examples of compounds are NaOH, NaCl, etc.

5 Representation

• Elements are represented by symbols and numbers. For example, Sodium is represented by Na.
• Compounds are represented by their chemical formula. For example, salt is represented by the formula NaCl.

6 Distinguished By

• Elements can be distinguished by their atomic number.
• Distinguished by their fixed ratio of different elements (arranged in a defined manner).

7 Composition and Property

• As only one type of atoms makes up an element, all the properties of that atom are represented by its atom.
• In the case of compounds, the same type of molecules makes up the compound.

8 Ability to Breakdown

• Elements cannot be broken down by chemical reactions
• Compounds can be easily separated into simpler substances by chemical reactions.