1. 3. Structure of Matter

2. Structure of Matter What are the letters in a chemical formula that represent the elements making up that compound? a.coefficientsc. subscripts b. chemical symbolsd. superscripts

3. Structure of Matter What are the letters in a chemical formula that represent the elements making up that compound? a.coefficientsc. subscripts b. chemical symbolsd. superscripts

4. Structure of Matter What is the mass, charge and location of a proton in an atom?

5. Structure of Matter What is the mass, charge and location of a proton in an atom?  Mass = 1 amu  Charge = + 1 positive  Location = nucleus

6. Structure of Matter What is the mass, charge and location of an electron in an atom?  Mass =  Charge =  Location =

7. Structure of Matter What is the mass, charge and location of an electron in an atom?  Mass = almost zero (0.0001 amu) too small to count  Charge = -1 negative  Location = electron cloud; swarming around, outside the nucleus.

8. Structure of Matter What is the mass, charge and location of an neutron in an atom?  Mass =  Charge =  Location =

9. Structure of Matter What is the mass, charge and location of an neutron in an atom?  Mass = 1 amu  Charge = neutral/zero  Location = nucleus

10. Structure of Matter What is the difference between atomic number and atomic mass?

11. Structure of Matter What is the difference between atomic number and atomic mass? Atomic number is the number of protons and atomic mass is the number of protons + neutrons.

12. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is its atomic number?

13. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is its atomic number? Atomic number = number of protons = 6

14. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is its atomic mass?

15. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is its atomic mass? Mass = neutrons + protons = 5 + 6 = 11

16. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is the over all charge on this element?

17. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is the over all charge on this element? +6 protons -6 electrons -= 0 neutral

18. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is the element?

19. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. What is the element? Atomic number = 6 = Carbon (see periodic chart)

20. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. Draw a Bohr model showing energy levels.

21. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. Draw a Bohr model showing energy levels.

22. Structure of Matter A mystery element has 5 neutrons, 6 protons, and 6 electrons. Draw a Bohr model showing energy levels. Electron (-) Proton (+) Neutron (0) Nucleus Energy Level 1 Energy Level 2

23. Structure of Matter How would the atom pictured below form an ion? Electron (-) 4 Proton (+) 4 Neutron (0) 4 Nucleus Energy Level 1 Energy Level 2

24. Structure of Matter How would the atom pictured below form an ion? It would lose 2 electrons with a total of 2 electrons remaining Electron (-) 2 Proton (+) 4 +2 The atom would have an overall charge of +2

25. Structure of Matter Atoms with the same number of protons but different numbers of neutrons are called __________. a. allotropesc. isotopes b. ionsd. nutrinos

26. Structure of Matter Atoms with the same number of protons but different numbers of neutrons are called __________. a. allotropesc. isotopes b. ionsd. nutrinos

27. Structure of Matter What is the name of this symbol? a.chemical symbolc. Bohr model b. dot diagramd. Modern atomic model

28. Structure of Matter What is the name of this symbol? a.chemical symbolc. Bohr model b. dot diagramd. Modern atomic model

29. Structure of Matter What do the dots stand for? a.protonsc. neutrons b. reactivity pointsd. valence electrons

30. Structure of Matter What do the dots stand for? a.protonsc. neutrons b. reactivity pointsd. valence electrons