How are the elements in the modern periodic table arranged?

• atomic mass

• chemical symbol

• element's name

• atomic number

What is the protons and neutrons added together?

• Mass Number

• Atomic Mass

What is the average of all the masses of an atom's isotopes?

• Mass Number

• Atomic Mass

Tags

NGSS.HS-PS1-8

What subatomic particle has a positive charge?

• electron

• neutron

• proton

Group 17 elements are called the ______ ______.

• Alkali Metals

• Noble Gases

• Halogens

• Alkaline Earth Metals

The columns of the periodic table are called _____ while the rows are called _____.

• groups/families, periods

• periods, groups/families

The atomic number of an atom tells the number of ______ in the nucleus.

The outermost electrons are called ______ electrons.

• nothing

• valence

• electron cloud

• energy levels

Lanthanides and Actinides are part of groups 3-12 which are called ______ metals.

• transition

• alkali

• alkaline earth

Use your periodic table. What element is in group 10, period 4?

• copper

• nickel

• cobalt

• palladium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2