Atoms and Molecules Worksheet

Bill Nye - Atoms and Molecules 1. Things are made of ____________ pieces of stuff Tiny 2. __________ is a Greek word meaning ___________ Atom; uncuttable 3. The heavy particles of the atom are in the ___________. Nucleus 4. The __________ particles are on the ____________. Middle; outside 5. __________ and ___________are found in the nucleus. Their charges are____________ and _______________. Protons and Neutrons; Positive and negative 6. Electrons ___________ each other and move about so Repel; solid the atom acts like a _____________. 7. ______________ of atoms would fit on the head of a Millions pin. 8. Atoms are the basic _______________ ______________ of all matter Building blocks 9. When atoms combine, they can make ______________. Molecules 10. All matter is made up of ____________ and ______________. Atoms ; molecules 11. Water is ___ parts _______________ and ___ part __________. 2, hydrogen; 1, oxygen 12. Water can be split apart by _________________. Electrolysis 13. To see spaces in matter, add one cup of ____________. Alcohol 14. The total volume is _________ __________ two Less than; empty cups, since alcohol has a lot of ____________ spaces; fit _________________ between molecules, where water molecules can _______. 1/2 15. The number of _____________ in the nucleus makes Protons the atoms different. 16. Elements have been arranged on a ______________ Periodic table ____________. 17. The ________________ number represents the num- Atomic ber of protons. 18. _______________ elements occur naturally 94 19. NaCl is salt, C3 H5 N3 O9 is nitro- glycerine used to make _______________ Dynamite 20. Inside protons and neutrons are ________________. Quarks 21. These are studied by _________________ _________________. Nuclear Physicists 22. Everything in the universe is either ____________ or Energy; matter _____________. 23. The smallest pieces of matter are ____________. Atoms 24. ___________________ is in every living thing, like us. Carbon 25. ___________________ chemistry is the study of this Organic element's compounds. 2/2