Catalyst (4 min) What is the mass number of the atom below? What element is the atom? ++ + + - - - -

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Presentation transcript:

Catalyst (4 min) What is the mass number of the atom below? What element is the atom?

What is the mass number of the atom below? Atomic mass = #p + #n Atomic mass = 4 +5 Atomic mass = 9 What element is the atom? 4 protons Beryllium! NOTE: ATOM BROCHURE DUE MONDAY!

Atomic Structure Review

How the Game Works… Question on the screen Work with your groups To get the point  Board in the air on time  Correct answer Team with the most points WINS! Points off:  Cheating  Lack of participation  Whining/ Arguing  Disrespectful language/behavior

Question #1 What subatomic particle has a positive charge and where is it located? Proton (+) In the nucleus

Question #2 How does the charge of an electron compare with the charge of a proton? A. Electrons have a greater charge and the opposite sign B. Electrons have a greater charge and the same sign C. Electrons have the same magnitude of charge and the opposite sign D. Electrons have the same magnitude of charge the same sign.

Question #3 An element has 12 protons, 10 neutrons and 12 electrons. What element is the atom? 12 protons MAGNESIUM!

Question #4 Why do atoms have a neutral charge overall even though they are made of charged particles? #protons = # electrons Protons (+) and electrons (-) have opposite charges The charges cancel out!

Question #5 If an atom has 4 protons, 4 electrons and 5 neutrons, what is the atomic mass of the atom? Mass = #p + #n Mass = Mass = 9

Question #6 What are two reasons why scientists use symbols to represent the different elements? Easier to write All scientists use the same symbols

Question #7 An atom has 7 protons and 5 neutrons. How many electrons does the atom have? #protons = #electrons 7 electrons!

Question #8 What is the element symbol of an atom with 18 protons and 17 neutrons? Atomic # = 18 Argon!

Question #9 An atom has a mass number of 15 and 9 protons. How many neutrons does the atom have? Mass number = #p + # n 15 = 9 + # n 6 = # n

Question #10 The atomic number of an atom is 8 and the atomic mass is 14. How many protons, electrons and neutrons are in the atom? Atomic # = # protons 8 protons! # protons = # electrons 8 electrons! Mass number = #p + #n 14 = 8 + #n 6 neutrons!

Question #11 What is the element symbol of an atom with a mass number of 25 and 11 neutrons? Mass number = #p + #n 25 = #p + 11 #p = #p = atomic # = 14 Silicon Si

Question #12 What element is the atom below? 9 protons FLUORINE

Question #13 What is the atomic number of the atom below? Atomic # = 10 What is the mass number of the atom below? mass number =

Question #14 How many electrons should the atom below have? #protons = #electrons 8 protons It should have 8 electrons!

Question #15 How many charged particles are in a sodium (Na) atom? Protons and electrons are charged #protons = #electrons 11 protons + 11 electrons 22 charged particles!

Question #16 The atomic number of an atom is 5 and the atomic mass is 13. How many protons, electrons and neutrons are in the atom? Atomic # = # protons 5 protons! # protons = # electrons 5 electrons! Mass number = #p + #n 13 = 5 + #n 7 neutrons!