Accelerated Chapter 5 Practice Test

An electron dot diagram shows an atom's number of

• protons
• electrons
• chemical bonds
• valence electrons

Which of these elements will become stable by losing one valence electron?

• Ca
• Na
• O
• Cl

Which of these elements is least likely to react with the other elements?

• Ca
• Cl
• N
• Ar

Which of these elements will form a -2 charge?

• Ca
• O
• Cl
• N

Why don't noble gases like to react?

• They don't have any valence electrons to be stable
• They have too many valence electrons to be stable
• They don't have enough valence electrons to be stable
• They already have enough valence electrons to be stable

Chemical properties of an element are determined by

• the name of the element
• the number of valence electrons
• how big the element is
• whether the element is endothermic or not

Sodium is element number 11 and in group 1. Which of the following is NOT true?

• it has 11 protons
• it makes a +1 charge
• it has 11 valence electrons
• it is reactive

The rows in the periodic table are called

• groups
• nonmetals
• periods
• metals

Dmitri Mendeleev made the first periodic table using increasing

• properties
• atomic number
• atomic mass
• reactivity

What is letter A?

• atomic mass
• element name
• atomic number
• element symbol