CHEMISTRY STAAR REVIEW

Which subatomic particle has a positive charge?

• Electron
• Neutron
• Proton
• All of the above

Which is the smallest subatomic particle with the least amount of mass?

• Proton
• Electron
• Neutron

Which subatomic particle has no charge?

• Proton
• Electron
• Neutron

What do you call a vertical (up and down) column on the Periodic Table of Elements?

• Periods/Rows
• Metals/Nonmetals
• Groups/Families
• Halogens/Noble Gases

What group of elements are on the "staircase" of the periodic table of elements?

• Metals
• Nonmetals
• Metalloids
• Halogens

What does the atomic number of an element tell you?

• the atomic mass
• the number of protons and electrons
• the number of neutrons and protons
• the number of electrons and neutrons

Mass number = 

• electrons + protons
• electrons + neutrons
• protons + neutrons
• protons + neutrons + electrons

If the atomic number of an element is 12, what do you know?

• There are 6 protons and 6 electrons
• There are 12 electrons and 6 neutrons
• There are 12 protons and 12 electrons
• There are 6 electrons and 6 protons

If an element has two energy levels (orbitals), what period is it in?

• 1
• 2
• 3
• 4

An element has three energy levels (orbitals).  What period is this element in?

• 1
• 2
• 3
• 4