Periodic Table Review

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

The atomic number tells us the number of ____________?

• Neutrons
• Protons
• Electrons

If an element is in group number 15 you know it has _____ valence electrons.

• 1

• 2

• 5

• 15

what does the 6 represent?

• Atomic mass
• atomic number
• chemical symbol
• element name

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

• 14
• 28
• 2
• None of these

Found in the nucleus of the atom

• electrons only
• protons only
• neutrons and protons
• neutrons and electrons

True or False? Neutrons have a negative charge

• True
• False

How Many Valence Electrons are in the element above?

• 1
• 3
• 5
• 7

Which of the following statement is true?

• Group 18 - 18 Valence Electrons
• Group 15 - 1 Valence Electrons
• Group 13 - 3 Valence Electrons
• Group 11 - 8 Valence Electrons

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name