Atom and Periodic Trends

SCIENCE

GRADE 8

Multiple Choice

Which of the following is a chemical compound?

• O2

• CO2

• H

Multiple Choice

Nitrogen is an element

• True

• False

Open Ended

What do you know about atom?

Open Ended

What do you know about periodic table?

Poll

Is all matter made up of atom?

• Yes

• No

Multiple Choice

What is the most reactive group in the periodic table?

• Alkali metals

• Alkaline earth metals

• Transition metals

• Noble gases

Multiple Choice

What is the least reactive group in the periodic table?

• Alkali metals

• Alkaline earth metals

• Transition metals

• Noble gases

Open Ended

Why noble gases are unreactive?

Multiple Choice

Which group is not included in reactivity periodic trends?

• Alkali metals

• Alkaline metals

• Halogens

• Noble gases