Question

A. Fill in the blanks 1. A substance that cannot be further broken into simpler substance is called_____.
2. Elements combine together in fixed proportions to form
3.____________ is the basic unit of matter. 4._________ are elements which have the properties of both metals and non-metals. 5. Two metals which exist as liquids below 30°C _______ and _______
6. _______is the only liquid non-metal.
7.________ metal can be cut with a knife.8_______ is a non-metal that shows lustre. 9.________and metal are used to make electric cables
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Answer 1

Answer:

Atom

Explanation:

Atom is a smallest organism which can not be broken into smaller parts

Answer 2

Answer:

1) Elements as elements are the purest form of matter and can not be further broken down into simpler substances.

2) compounds

3) Atom

4) Semi-metals or metalloids- Boron, Silicon

5) Mercury and Bromine.

6) Bromine. It is in its liquid state at room temperature.

7) Sodium and potassium.

8) Graphite,iodine etc.

9) Copper and aluminium are the most used metals to make electric wires and cables.

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