1. Chemistry Unit 3 Welcome to Jeopardy! With your hosts…. Mrs. Einstein & Mr. Naturale

2. The smallest part of an element is an ______. And it is made up of ______, ________ and ______.

3. The nucleus of an atom consists of _____ and _____.

4. Neutrons have a _______ charge, and protons have a ________ charge.

5. When atoms gain ______, they form ______ions.

6. List the number of protons, electrons, and neutrons in each ion O 2- atomic mass: 16 H + atomic mass: 1 F - atomic mass: 19 Do any of these atoms have complete valence shells?_____(list them if yes).

7. What is a valence electron & why are they important to a chemist?

8. Draw out the Lewis structure for calcium

9. What does the 235 in uranium-235 represent? 1. Mass number 2. Atomic number 3. Molar mass 4. Number of neutrons 5. pH level

10. The atomic symbol for lithium is___ ( show both atomic number and mass number ) Hint: the atomic mass is 7 for lithium. AND….the top number represents the: 1) Neutron number 2) Mass number 3) Atomic number 4) Base number

11. An atom’s MASS # is the: 1. Neutron# – the proton# 2. Atomic # - the proton # 3. Proton# + the electron# 4. Proton # + the neutron # 5. Neutron # - the Ph level

12. The identity of an element is determined by its: 1. Neutron # 2. Proton # 3. Acidity level 4. Electron # 5. Valence Electron #

13. Nitrogen forms an ion with a CHARGE of _______

14. Which atom is most likely to form a 1- ion? a) Ar b) Br c) Mg d) P e) K f) B

15. What type of elements become CATIONS? (think of how we grouped them)