Elements and Atoms

What charge does an electron have?

• positive
• negative
• no charge

What charge does a proton have?

• positive
• negative
• no charge

What charge does a neutron have?

• positive
• negative
• no charge

What particles are in the nucleus of an atom?

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

What is the atomic number?

• the number of protons in an element
  
• the number of neutrons in an element

What are the vertical columns in the periodic table?

• Groups
• Periods

What are the horizontal rows in the periodic table?

• Groups
• Periods

What particle travels around the nucleus?

• proton
• neutron
• electron

What is an element?

• matter that is made up of only one type of atom.
  
• matter that is made up of two types of atoms

Which answer is NOT an example of physical properties?

• appearance
• color
• flammability
• boiling point