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Cement hardening is not an example of melting. Melting involves a substance changing from a solid to a liquid state due to heat, while cement hardening is a chemical process where the cement mixture reacts and forms bonds to create a rigid solid structure.

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1y ago

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Is concrete hardening an example of chemical or physical change?

Concrete hardening is an example of a chemical change. When water is added to the cement mixture, a chemical reaction occurs between the water and the cement particles, resulting in a new substance with different properties than the original components.


Can you boil the white cement boiling point and melting point of white cement?

Cement has not a melting and boiling point; after heating cement is thermally decomposed.


What types of cement otherthan portlandcement?

Rapid hardening cementExtra rapid hardening cementExpansive cementSulphate resisting cementQuick setting cementColored cementWhite cementHydrophobic cementHigh alumina cementBlast furnace slag cement


What is rain forced cement concrete?

It is not rain forced but re-inforced cement concrete. It means the concrete after setting and hardening.


What hydroxide is in cement?

Calcium hydroxide is one of the key compounds found in cement. It forms during the hydration process of cement when water is added to the cement mixture, leading to the setting and hardening of the material.


What minerals do cement have in them?

Cement typically contains minerals like limestone, clay, silica, and gypsum. These minerals are essential for binding and hardening the mixture to form the final cement product.


How you can increase melting point of aluminium?

To increase the melting point of aluminium, (and treating this as a philosophical question), then hardening the 'crystal matrix' may be one approach. Surface hardening by work hardening, or perhaps by inserting nitrogen ions into the surface as is used in metal(ferrous) hardening.


What is hardening of concrete?

Cement when mixed with sufficient quantity of water,the compounds present in cement reacts with water to form a cementitious crystalline structure that adheres to the sand and aggregates.This helps in binding the mass together and increases its strength till it becomes very hard.This is called hardening of cement.


Being a lightweight with a high melting point this group II metal is an ideal hardening agent?

Beryllium is the lightweight Group II metal with high melting point that is known for its use as a hardening agent in various alloys.


Which process cannot happen in a rock cycle?

Sedimentary melting cooling and hardening Metamorphic


What is an example of a physical change in baking?

both, because the ingredients are undergoing both physical and chemical changes such as: Butter melting= physical change Egg whites hardening= chemical change both, because the ingredients are undergoing both physical and chemical changes such as: Butter melting= physical change Egg whites hardening= chemical change


What type of energy causes cement to dry?

The type of energy that causes cement to dry is chemical energy. When water is added to cement, a chemical reaction called hydration occurs, where the water molecules react with the cement particles to form new compounds. This reaction releases energy in the form of heat, which helps to drive the hardening and drying process of the cement. The hydration process is essential for the formation of strong and durable concrete structures.