Chapter 17 8th Grade Science Putman

Each inner energy level of an atom has a maximum number of ____ it can hold. 

• electrons
• neutrons 
• quarks
• protons

Dot diagrams are used to represent ____. 

• outer level electrons
• atomic mass
• isotopes
• atomic numbers

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

•  isotopes
• electrons
• quarks 
• atoms

A chemical symbol represents the ____ of an element. 

• name
• structure
• reaction
• group

Horizontal rows of the periodic table are called ____. 

• groups
• families
• clusters 
• periods

Atoms of the same element with different numbers of neutrons are called ____. 

• isotopes
• radioactive elements
• metalloids
• metals

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

• quark
• proton
• neutron
• electron

Elements that are gases, are brittle, and are poor conductors at room temperature are ____. 

• isotopes
• nonmetals
• metalloids
• metals 

A ____ is used to accelerate protons in the study of subatomic particles. a.  c.  b.  d.

• tevatron
•  television
• termanite
• technology

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____. a. 26 c. 52 b. 30 d. 

• 26
• 30
• 53
• 56