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

An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.

An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.

Project.

To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.

Project.

To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.

Define the following term with an example.

Compound

Define the following term with an example.

Compound

Define the following term with an example.

Metal

Define the following term with an example.

Metal

Define the following term with an example.

Non-metal

Define the following term with an example.

Non-metal

Define the following term with an example.

Metalloid

Define the following term with an example.

Metalloid

Sleep is not only good for our body, but it is also good for ______.

Our living place should be ______.

I am green colour box with garbage. I am ______.

The hair follicles produce ______ which keeps the hair smooth.

What is hygiene?

Your friend says that her hair is thin, spares and lost very often. Suggest your ideas to reduce this problem.

Higher order thinking question.

A person is sleeping during day time. Why does this happen to some people that they feel sleepy during day time in office or in the classroom? Have you ever come across such situation? Explain.

Temperature of Srinagar (J&K) is -4°C and in Kodaikanal is 3°C which of them has greater temperature? What is the difference between the temperatures of these two places?