Unit 5 Pre Assessment

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

An atom is electrically neutral when

• protons and neutrons are the same
• protons and electrons are the same
• neutrons and electrons are the same
• neutrons balance the protons and electrons

What are the name of the electrons in the outer shell called?

• Outer electrons

• Valence electrons

• Orbital electrons

• I need help

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 

• Metal
• Nonmetal
• Metalloid
• Pretty

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Metals are found on this side of the Periodic Table:

• Left side

• Right side

• On the stair-step line

• Below

Non-metals are located on the...

• Right side of the periodic table

• left side of the periodic table

• top row of the dinner table

• along the zig-zag line

Where are neutrons located in the atom?

• shells/orbitals
• rings
• center
• nucleus

Iron is a good conductor, malleable and magnetic. What type of element is Iron? 

• Metal
• Nonmetal
• Metalloid
• Pretty