Chemical reactivity ______________ as you go from left to right on the periodic table.

• decreases

• increases

Which two subatomic particles are found in the nucleus?

• Protons

• Electrons

• Neutrons

The energy shell(s) are home to what subatomic particle? (the blue dots)

• Protons

• Electrons

• Neutrons

Which of the following models correctly illustrates the makeup of a carbon atom?

• 
• 
• 

Which of the following statements are true about the maximum amount of electrons each energy shell can hold?

• 1st Energy Shell: 3 electrons

  2nd Energy Shell: 7 electrons

  3rd Energy Shell: 11 electrons

• 1st Energy Shell: 2 electrons

  2nd Energy Shell: 8 electrons

  3rd Energy Shell: 10 electrons

• 1st Energy Shell: 2 electrons

  2nd Energy Shell: 8 electrons

  3rd Energy Shell: 8 electrons

The picture shows the chemical formula for glucose. Based off this picture, we know that glucose contains...

• 6 Carbon atoms

  6 Hydrogen atoms

  12 Oxygen atoms

• 6 Carbon atoms

  12 Hydrogen atoms

  6 Oxygen atoms

• 12 Carbon atoms

  6 Hydrogen atoms

  6 Oxygen atoms

The atomic number of Carbon is 6.

This number tells us...

• Carbon has 12 neutrons and 12 protons.

• Carbon has an odd amount amount of protons and electrons.

• Carbon has 6 protons and 6 electrons.

Which of the following statements are true about the placement of Oxygen on the periodic table?

• Oxygen has more protons than Boron.

• Oxygen has more protons than Neon.

Horizontal rows on the periodic table are called periods. The period tells us...

• number of valence electrons an atom has

• number of energy shells an atom has

The columns on the periodic table are called groups. The groups tell us...

• number of valence electrons an atom has

• number of energy shells an atom has