class vii Quiz on matter, molecule and atom

MATTER,MOLECULE AND ATOM

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

Anything that occupies and has is called matter. can be in solid,liquid and forms. If an atom is neutral then it should have equal number of protons and electrons. Also Number of proton= number. number of hydrogen is one. It is one such atom with no . proton and neutron resides in of an atom and are distributed in the orbital part.