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What else can I help you with?
When will a collision lead to a chemical reaction?
When the collision is hard and fast enough. Increasing the kinetic energy will increase the likelihood of hard and fast collisions, which will ultimately increase the rate of the reaction. (This is called collision theory.)
Is a compound irreversible?
That depends on what is being mixed together. Two examples of this are: If you mix sand, gravel, and water it is reversible and you can separate the mixture back to its original three parts. If you mix sand, gravel, water, and cement powder it is not reversible as the water will react with the cement powder creating liquid cement and the sand and gravel will form concrete with the liquid cement. After a few hours the liquid cement in the concrete will set and the concrete mixture will become as hard as rock. It is now no longer possible to separate the mixture back to its original four parts.
What is sulphur concrete?
Ordinary portland cement based concrete consists of a mixture of aggregates bound together with portland cement. In the presence of water a chemical reaction takes place and the portland cement is hydolysed. At the end of this chemical reaction the cement becomes hard and binds the aggregate particles together.Sulphur concrete is composed of a similar mixture of aggregates, however, and this is the big difference, there is no portland cement involved. Instead the aggregate mixture is bound together by molten sulphur at elevated temperatures. Upon placing, the sulphur concrete is allowed to cool and as it cools the molten sulphur becomes a solid again binding the aggregates together imparting rigidity to the concrete mix.Because sulphur concrete contains no alkaline materials, unlike portland cement mixtures, it is very much more resistant to acid attack and thus finds favour in industry where acid resistant concrete is desirable.
Why do you fill volcano with cement?
Volcanoes are filled with cement as a way to stop or redirect lava flows in the event of an eruption. The cement reduces the risk of damage to surrounding areas by containing the lava flow within the volcano. It is a measure taken to protect lives and property in volcanic zones.
What is waterproof cement?
Waterproof cement is a type of cement that is formulated to resist water penetration and moisture ingress. It is commonly used in projects where water resistance is important, such as basements, swimming pools, and other water-retaining structures. Waterproof cement typically contains additives that enhance its resistance to water and help prevent water damage.
How can you weaken concrete?
Not much you can do if the concrete is already hard, but if you are talking about plastic concrete (still in its wet state), there's lots you can do to hurt/weaken it:If you had the wrong chemical admixturesAny addition of water at the job site will weaken the concreteFailture to properly cure the concrete
How fast does an airplane have to be moving to produce a sonic boom on a day when the temperature is 30 degrees Celsius?
maybe it goes fast and it just hits the cement or ground hard.....
How cement get hard?
Cement hardens through a chemical process called hydration, where water reacts with the compounds in the cement to form crystals. This process creates a strong and durable bond between the cement particles, resulting in a solid and hardened structure. Factors such as water-to-cement ratio, temperature, and curing time can affect the strength and durability of the hardened cement.
Why cement can set hard?
Thw AIR set the cement hard I found this out on my text book LOL
What is a good sentence for cement?
the strong apartment building was made of hard cement
What makes Cement hard?
Cement hardens through a chemical process known as hydration, where water interacts with the compounds in the cement to form strong, crystalline structures. As water is added to the cement mix, it starts a reaction that binds the particles together, eventually creating a solid and durable material. This process is essential for construction projects and ensures that the cement can support heavy loads and withstand various weather conditions.
Why is cement not reversible after mixing with water?
Cement undergoes a chemical reaction called hydration when it is mixed with water, forming a hard and strong material. This reaction creates new compounds that cannot be reversed back into their original state through simple drying or evaporation. Once cement has fully cured, the bond created between the water and cement particles is permanent.
What happens if you eat hard cement?
yes it goes extremely hard
Is the setting of concrete a physical or chemical change?
It's a physical change.It's a chemical change. The concrete hardens through a chemical reaction called hydration :)Its a physical change. The Chemical change already happened when the water was added. The concrete powder became hydrated turning it into usable concrete.
Why does cement go hard when dry?
Cement hardens when mixed with water due to a chemical reaction called hydration. The water causes the cement particles to react and form crystals, which bind together to create a solid structure. As the mixture dries, these crystals continue to grow and interlock, resulting in a hardened material that we commonly refer to as concrete.
Does roofing cement dry hard and how long does it take to dry?
how long does roof cement to dry
What can you take to get hard before you see your girlfriend?
Cement
