EDU 151 | Review of High School Chemistry

What is the first element on the periodic table?

• Carbon

• Hydrogen

• Boron

• Phosphate

True or False? A pH of 9 is acidic.

Which one is a polyatomic ion?

• Phosphate

• Lithium

• Flouride

• Oxygen

How many electrons does Oxygen have in its valence shell?

• 1

• 2

• 6

• 4

True or False? Carbon is one of the elements that make up all life.

How many valence electrons does Krypton have in its valence shell?

• 2

• 4

• 8

• 3

What are main elements that support all life?

• Carbon

• Nitrogen

• Oxygen

• Hydrogen

A pH of 7 is ______.

How many valence electrons does Helium have in its valence shell?

• 1

• 2

• 3

• 4

A pH of 14 is _____.