Chalk

What can chalk harm?

• Humans with allergies

• Plants

• Animals

• All of the above

What are teachers causing?

• Danger to themselves

• Danger to students

• All of the above

• None of the above

What is Chalk?

• Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite.

• Chalk is a white powder that can harm you and other living things.

• Chalk is limestone.

• Chalk is something you write with on concrete.

What is chalk made of?

• Limestone and soft powder

• Powder and calcite

• Calcite and ionic salt

• Chalk is made of limestone, calcite, ionic salt, CaCo3

Tags

NGSS.MS-PS1-1

What is Calcite?

• A powder that is in chalk

• Ionic salt

• Salt and sand

• Limestone

Tags

NGSS.MS-PS1-1

What is Calcite made of?

• Rocks and crystals

• Quarts

• Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate

• Water formed over time

Tags

NGSS.MS-PS1-1