Q.1.
The Greek word means ______.
Q.2.
A substance that consists of a single type of atom is _________.
Q.3.
This is a particle that carries a negative electrical charge.
Q.4.
Any substance that cannot be broken into two or more simpler substances is known as _______.
Q.5.
The center or core of an atom is called ______.
Q.6.
These have the same number of protons in each atom but the neutron numbers can vary.
Q.7.
This contains a dense central nucleus that is surrounded by a cloud of negatively charged electrons.
Q.8.
The number of protons in the nucleus of an atom is known as the ________.
Q.9.
This is a particle that carries a positive electrical charge.
Q.10.
The study of the composition, structure, properties and change of matter is known as _______.