Test - Ch.4 Atomic Structure

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

How many electrons does potassium K contain? (click to see image)

• 19
• 39
• 20
• 40

How many neutrons are in a Gold atom?

• 79
• 196
• 118
• 275

What identifies the element?

• Protons
• Neutrons
• valence electrons
• Nucleus

What is the name of group number 1?

• halogens

• noble gases

• alkali metals

• alkaline earth metals

Which element is found in group 2, period 6?

• Oxygen (O)

• Barium (Ba)

• Selenium (Se)

• Carbon (C)

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

the positively charged subatomic particle contained in the nucleus of an atom

• proton

• neutron

• electron

• matter