What is a nonmetal ? And do you know how many metals and non-metals there are? Based …
What is metal? - What elements have you seen in nature? Can you tell? The elements in…
Here we discuss some common questions or FAQs about reactive non-metals, like " W…
What is Hydrogen? Hydrogen is the lightest and simplest element with no smell, taste …
What is oxygen? Live animals can live for some time without food and water, but witho…
What is a chemical reaction ? We've seen the paper burn to ashes. What is such a c…
Do you know what is a neutron ? Atoms combine to form different substances while all a…