Question

A material that is made up of either one type of atom or two or more types of
atoms joined together in a fixed composition:
4. The smallest part of a substance which has all the properties of the substance.
v. Complete the cross word puzzle using the hints given below. 5X1=5M
1. A simple machine with an inclined plane wound around a rod.
2. The part of the plant through which bryophyllum reproduces.
3. The Greek term from which the word atom was derived.
4. Devices or tools used to make work easier with less effort.
5. The part of a plant with stem, leaves, flowers attached to the stock. 3
3
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Answer 1

Answer:

Explanation:

4. An atom

V) 1. screw simple machine

2. leaves

3.atomos

4.Lever.

Wheel and axle.

Pulley.

Inclined plane.

Wedge.

Screw.

5. The petiole

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Answer 2

Explanation:

A material that is made up of either one type of atom or two or more types of

atoms joined together in a fixed composition is called a molecule.

Anything that possesses inertia and occupies space is termed as matter. If we talk about its basic constructing elements, matter is made up of basic particles of electrons, protons and neutron , each having a fixed mass, size and shape. These basic elements can be combined together to make atoms and atoms combines together make molecules