MCHS - Properties and Changes of Matter

Last updated over 5 years ago
10 questions
Note from the author:
Chemical and Physical Properties
1

The above picture is of the Giza Pyramid of Egypt. The pyramid has a rough texture.

1

The pyramid has a sandstone color.

1

The pyramid has a does not react with rainwater.

1

The pyramid has a length of 230 meters.

1

The pyramid has survived so long since it is made of limestone which has a very low solubility with water (ability to dissolve in water).

1

The mass is estimated to be 80,000 kg.

1

The slowly there is erosion with solubility with water that will make parts of the pyramid crumble and fall away.

1

Defend your above answer that the slow erosion with water where parts of the pyramid crumble and fall away being either a physical or chemical change. How do you know for sure?

1

Direct heat to the limestone reacts off carbon dioxide gas leaving behind lime. The lime is white and will have a more crumbly texture than the original limestone.

1

Defend your above answer that heating the limestone reacts off carbon dioxide gas leaving behind lime that is white and more crumbly texture. How do you know for sure?