SSLC (English Medium) Class 7 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Rewrite the given sentence in correct form.

Elements contain two or more kind of atoms and compounds contain only one kind of atom.

Rewrite the given sentence in correct form.

Elements contain two or more kind of atoms and compounds contain only one kind of atom.

The basic unit of matter is ______.

The basic unit of matter is ______.

The smaller particles found in the atom is called ______.

The smaller particles found in the atom is called ______.

State true or false. If false, correct the statement.

The basic unit of an element is molecule.

State true or false. If false, correct the statement.

The basic unit of an element is molecule.

State true or false. If false, correct the statement.

An atom is electrically neutral.

State true or false. If false, correct the statement.

An atom is electrically neutral.

K: Potassium:: C: ______.

K: Potassium:: C: ______.

Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.

Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.

Define – Atom.

Define – Atom.

Name the sub-atomic particles.

Name the sub-atomic particles.

Draw the structure of an atom and explain the position of the sub-atomic particles.

Draw the structure of an atom and explain the position of the sub-atomic particles.