PS Unit 1 The Atom and Periodic Table

What subatomic particle is positively charged?

• proton
• electron
• neutron
• nucleus

What sub atomic particle is negatively charged?

• proton
• electron
• neutron
• nucleus

What sub atomic particle has no charge?

• Protons
• electrons
• neutrons
• nucleus

If two atoms have the same number of protons and a different number of neutrons it is considered a _____.

• ion
• isotope
• ionic charge
• average atomic mass

The ____ is determined by adding the protons and neutrons in a single atom.

• atomic mass unit
• average atomic mass
• atomic number
• isotope

The weighted average found at the bottom of the periodic table is called the ______.

• atomic mass unit

• average atomic mass

• atomic number

• isotope

The number at the top of a chemical symbol on the periodic table is called the ______.

• atomic mass unit

• average atomic mass

• atomic number

• isotope

 The atomic number represents the number of _____ in the atom

• protons
• neutrons
• electrons
• atomic mass unit

If you change the number of _____ in the atom you change the element.

• protons
• electrons
• neutrons
• atomic mass

What is the smallest particle of an element that retains the properties of that element?

• atom
• nucleus
• electron
• molecule