Atoms and the Periodic Table Test

What do the elements Helium(He), Neon(Ne), and Argon(Ar) all have in common?

• They are all solids at room temperature

• They are extremely reactive elements

• Their outer shells are filled

• Their inner shells are not filled

What is the atomic number of germanium?

• 4

• 32

• 40.6

• 72.6

What is the mass number of chlorine?

• 3

• 17

• 35

What are the first two elements in Period 4?

• Be&Mg

• K&Ca

• C&Si

• Ti&Zr

What is the identity of the element that has 19 protons and 22 neutrons?

• Titanium

• Niobium

• Potassium

• Krypton

Which family includes Beryllium and Magnesium?

• Noble gases

• Alkali metals

• Alkaline earth metals

• Lanthanide series

What happens to the number of energy levels (shells) as you move down a group or column on the periodic table?

• increase

• decrease

• stay the same

• nothing

What is the positively charged particle of an atom?

• proton(s)

• electron(s)

• neutron(s)

What happens to the number of valence electrons as you move from left to right across a row or period in the periodic table?

• increase

• decrease

• stay the same

• nothing

Silicon is in what group and period?

• Group 4, Period 2

• Group 4, Period 3

• Group 14, Period 2

• Group 14, Period 3