Periodic table

Why was Mendeleev's students struggling in his Science Class?

• It was boring

• It was too much info

• There's no fun activities

• There's no system to organize elements

Which pair of elements has the most similar properties?

• Be and B

• O and S

• H and Hg

• Na and F

Tags

NGSS.HS-PS1-1

When elements fall under the same column, this means they belong to the same ______.

• family or group

• period

Name group 1A on the periodic table.

• alkali metals
• alkaline earth metals
• noble gases
  noble gases
• halogens

Tags

NGSS.HS-PS1-1

Who is the scientist who organized the periodic chart by ATOMIC NUMBER?

• Moseley

• Mendeleev

• Einstein

• Miller

A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the _________.

• periodic law
• alkaline-earth metals
• actinide
• group rule

Tags

NGSS.HS-PS1-1

Which of the following is a property of a non-metal?

• Conducts electricity and heats well
• Can be hammered into thin sheets
• Is brittle and breaks easily
• Has a shiny, metallic luster

Which element is a metalloid?

• Titanium
• Selenium
• Potassium
• Polonium

Tags

NGSS.HS-PS1-1

The chalcogen in the 3rd period is...

• chlorine

• Sulfur

How many periods are on the periodic table?

• 5

• 6

• 7

• 8