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What bonds are broken and remoulded during setting?
During setting of materials like concrete or plaster, the bonds that are broken are water molecules, which are used in the hydration process to form new chemical bonds. These new bonds include the formation of calcium silicate hydrate (C-S-H) gel in concrete and gypsum crystals in plaster, which give the material its strength and durability.
What bonds can be affected by pH and temperature changes?
Ionic bonds are affected by pH changes because they depend on charged ions. Hydrogen bonds can be influenced by both pH and temperature changes, as the interactions between molecules can vary based on these factors. Additionally, disulfide bonds in proteins can be affected by both pH and temperature changes, leading to denaturation of the protein structure.
Is a grape drying in the sun a chemical or physical change?
It is a chemical change. Fermentation causes bonds to break within a compound and new bonds form thus chemically changing the initial 'reactant'.
What bonds found in the hair can be easily broken by heat or water?
Hydrogen bonds are the most common bonds found in hair that can be easily broken by heat or water. These bonds are responsible for the flexibility and movement of hair strands, which is why they are affected by changes in temperature or moisture levels.
Where do living organism obtain energy for cell process?
When bonds form during cell processes, energy is released.
Why is drying considered a physical change?
No new chemical bonds need to be formed or existing chemical bonds broken during drying.
Why hair should be kept damp during the blow drying and finger drying processes?
Hair should always be damp when drying as when the hair is wet the hydrogen bonds are broken down and this makes it alot easier to shape and style the hair as desired x
Why should hair be kept damp during the blow drying and finger drying processes?
Hair should always be damp when drying as when the hair is wet the hydrogen bonds are broken down and this makes it alot easier to shape and style the hair as desired x
What bonds are broken and remoulded during setting?
During setting of materials like concrete or plaster, the bonds that are broken are water molecules, which are used in the hydration process to form new chemical bonds. These new bonds include the formation of calcium silicate hydrate (C-S-H) gel in concrete and gypsum crystals in plaster, which give the material its strength and durability.
What are the physical effects of blow drying finger drying and heated styling processes on the hair?
The Hydrogen bonds are broken and reformed
What bonds can be affected by pH and temperature changes?
Ionic bonds are affected by pH changes because they depend on charged ions. Hydrogen bonds can be influenced by both pH and temperature changes, as the interactions between molecules can vary based on these factors. Additionally, disulfide bonds in proteins can be affected by both pH and temperature changes, leading to denaturation of the protein structure.
What does humidity do to the hair structure?
The cells in hair are held together by covalent bonds and covalent bonds are affected by water.
Is a grape drying in the sun a chemical or physical change?
It is a chemical change. Fermentation causes bonds to break within a compound and new bonds form thus chemically changing the initial 'reactant'.
Are bonds recession proof investments?
Bonds are not completely recession-proof investments, as their value can be affected by economic downturns. However, they are generally considered safer than stocks during a recession because they provide a fixed income stream and are less volatile.
What are the safest investments to consider during a recession?
During a recession, the safest investments to consider are typically low-risk options such as government bonds, high-quality corporate bonds, and defensive stocks in sectors like healthcare and consumer staples. These investments are less likely to be affected by economic downturns and can provide stability to a portfolio during challenging times.
Where do living organism obtain energy for cell process?
When bonds form during cell processes, energy is released.
What bonds found in the hair can be easily broken by heat or water?
Hydrogen bonds are the most common bonds found in hair that can be easily broken by heat or water. These bonds are responsible for the flexibility and movement of hair strands, which is why they are affected by changes in temperature or moisture levels.
