Structure of Atom and Periodic Table

The atomic number of an atom is always the same as the number of 

• electrons
• protons
• neutrons
• isotopes

An atom has a mass number of 36 and atomic number of 16. How many neutrons does the atom have?

• 36
• 20
• 16
• 6

An atom with an atomic number of 14 and 26 neutrons has a mass number of?

• 12
• 14
• 26
• 40

The term malleable means

• being able to form into a wire

• an atom's reactivity

• an atom's atomic structure

• being able to be hammered into sheets

Elements that are in the same row can also be described as being in the same

• group
• period

How are elements in the periodic table arranged?

• by their atomic mass
• by their chemical symbol
• by their chemical name
• by their atomic number

What does the number of electrons in the outer level indicate about the element?

• how reactive the element is
• how malleable the element is
• how brittle the element is

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Vertical columns in the periodic table _______ of elements with similar properties

• groups
• periods

Which of the following best describes the properties of metals?

• hard, brittle, and nonconductive
• liquid, dark, and conductive
• shiny, malleable, and conductive
• soft, oily, and very reactive

The _________ of an element equals the number of protons in an atom of the element. 

• mass number
• atomic weight
• atomic number
• isotopes