Ch. 16

What is the smallest part of an element that will still maintain all the element's properties?

• A. atom

• B. proton

• C. electron.

• D. quark

What is the name of the electrons in the outermost energy level?

• ions

• isotopes

• quarks

• valence electrons

How are elements arranged in the Periodic Table?

• by atomic mass

• by atomic number

• by the number of neutrons

What does the atomic number of an element represent?

• The number of protons + the number of neutrons

• The number of protons + electrons

• the number of electrons

• the number of protons

Which subatomic particle has a positive charge?

• proton
• neutron
• electron
• all of these

What is the atomic number of Silver?

• 47

• 61

• 108

• 155

How many protons, neutrons, electrons are in a neutral atom of Silver

• p-47, n- 47, e - 47

• p- 47, n- 61, e- 47

• p- 47, n- 108, e- 47

• p- 108, n- 155, e-47

What is the atomic number of Gallium?

• 70

• 39

• 31

• 101

How many protons, neutrons, and electrons are in a neutral atom of Gallium?

• p- 31, n-39, e-31

• p- 69, n- 31, e- 131

• p- 31, n- 70, e- 31

• p- 31, n- 70, e- 31

What do the different periods tell us about an element on the periodic table?

• The number of valance electrons

• The number of energy levels

• the atomic mass