1. Proton is a i. positively charged particle
ii. negatively charged particle
iii. neutral particle
iv. all of these.
2.Write any 3 differences between noise and music.
3.Does pure water conduct electricity? If not, what can we do to make it
conducting?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

How are elements arranged in a periodic table

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car