Periodic Table/ Atomic Structure

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.MS-PS1-1

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.
• supreme solids.
• noble gases.
• legit liquids.

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

The central region of an atom where its neutrons and protons are is called the

• nucleus 
• electron cloud
• core 
• center 

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

Which statement is accurate regarding subatomic particles?

• electrons are the heaviest particle, with a positive charge

• protons and electrons are equal in mass with positive charges

• electrons are neutral with the least mass

• protons have a positive charge with a mass of 1 amu and neutrons are neutral with the same mass as a proton

Which atom has a nucleus that contains 13 protons and 14 neutrons?

• Mg

• Be

• Al

• N

In the modern periodic table elements are arranged in order of increasing

• mass number

• atomic number

• oxidation number

• valence electron number

What is the mass number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1