Chemistry Semester 1 Review Q's

What group number are the halogens?

• 18

• 1

• 2

• 17

A molecule with 2 atoms bonded to the central atom and 2 lone pairs of electrons has what shape?

• trigonal pyrimidal

• tetrahedral

• linear

• bent

What is the name of group number 1?

• halogens

• noble gases

• alkali metals

• alkaline earth metals

Tags

NGSS.HS-PS1-1

Valence electrons are

• the electrons in the outer most energy level

• all the electrons in the atom

• determined by the period of the element

• not important

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does magnesium have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An elements mass number equals the combined number of

• Protons and Electrons

• Electrons and Neutrons

• Protons and Neutrons

• Neutrons and Electrons

What are the rows referred to on the Periodic Table of Elements?

• Families or groups

• Periods

• Horizontals

• Columns

Metals (select all that apply)

• are found on the right side of the periodic table.

• are found on the left side of the periodic table.

• are good conductors of heat and electricity.

• are brittle.

• are malleable and ductile.

Which element has more energy levels?

• Oxygen (O)

• Sulfur (S)

• Tellurium (Te)

• Polonium (Po)

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons