Question

can any one solve this questions, I need fast plz..........

Answer 1

1 ) two particles of atom: nucleus , shells.

2) leucoplast stores the food prepared by plants.

3) Any object that has some weight and occupy so space is called matter .there are three states of matter: solid, liquid,gas.

4) A pure substance is that which is made of single type of particles.ex- hydrogen atom.

5) mass can neither be created nor destroyed in a chemical reaction.

7) two unicellular organism- ameoba ,euglena