2nd Semester Final

Each energy level of an atom has a maximum number of _____ it can hold

• neutrons
• quarks
• protons
• electrons

Dot diagrams are used to represent _____.

• the structure of the nucleus
• atomic number
• isotopes
• outer electons

Horizontal rows of the periodic table are called _____.

• groups
• families
• clusters
• periods

Elements in group 3 through 12 are called _____.

• metalloids
• transition metals
• noble gas
• isotoped

A certain atom has 26 protons, 26 electrons, and 30 neutrons. It mass number is _____.

• 26
• 30
• 52
• 56

Particles of matter that make up protons and neutrons are _____.

• quarks
• atoms
• electrons
• isotopes

A chemical symbol represents the _____ of an element

• structure
• name
• reaction
• type

Atoms of the same element with different number of neutrons are called

• isotopes
• metalloids
• transition elements
• radioactive

A particle that moves around the nucleus is a(n) _____.

• proton
• ion
• electron
• neutron

Which of the following is NOT found in the nucleus of an atom?

• proton
• neutron
• electron
• quark