Group 1 Elements

What happens to the density of alkali metals?

• Decreases

• Stays the same

• I don’t know

• Increases

Which is this element?

• Lithium

• Beryllium

• Potassium

• Calcium

Tags

NGSS.HS-PS1-1

Fill in the blank.

Alkali metals and ________ react aggressively.

• all of these

• Alkali earth metals

• noble gases

• Halogens

Which element(s) of group 1 are most reactive?

• Lithium and potassium

• Lithium

• Francium

• Caesium and Francium

Alkali metals _____ when they are exposed to water.

• Reactive aggressively

• form metal hydroxide

• Explodes

• Result in fire

Tags

NGSS.HS-PS1-1

Why was group 1 named as alkali metals?

• Because of its properties

• it was named after the oxides and hydroxides which were formed

• Both of them

• none of the above

What is the meaning of the Greek word for lithium which is lithis?

• ductile

• hard

• rigid

• stone

What is the Greek word for lithium?

• lithi

• lithis

• Both of them

• none of the above

What is the use of potassium nitrate?

• Sanitiser

• fertiliser

• Soap

• ink

Down the group the boiling point of metals generally...

• increases

• Decrease

• Stays the same

• Any of them