Cape Bio Water detailed

Explain how water acts as a solvent for sodium chloride.

The oxygen atom in water is attracted to the Na+ ion. The hydrogen atom in water is attracted to the Cl- ion.

The ionic bonds between the Na+ and Cl- ions are broken. Each ion becomes surrounded by a cloud of water molecules which keeps the ions apart. The ions are now in solution.

The structure attached by image is sucrose, a disaccharide produced by plant cells.

Name the covalent bonds between that joins the two monomers in sucrose

A Glycosidic Bond

Why type of bond does the atoms in water have?

A covalent bond

What is a hydrogen bond

The positively charged atoms in one molecule are attracted to the negatively charged oxygen atoms in other molecules

For a single water molecule in ice what is the maximum number of hydrogen bonds

4

Water description in biochemistry

Water is the most abundant molecule in our bodies. Water is a major component of all cells often making up between 70-90% of the cells mass

What is the specific capacity of water

4.2 j g-1 •C-1

How many joules of energy does it take to heat 1 gram of water by 1•C

4.2 j

Name the properties of water

1. High specific heat capacity

2. High Latent heat of vaporisation

3. High Latent heat of fusion

4. Good solvent

5. Density and viscosity

6. High Cohesion

7. Incompressible

8. Reactivity

What does a water molecule consist of

Two hydrogen atoms covalently bonded to one oxygen atom

Define solvent

Able to dissolve other substances

Define solute

The solute is the substance being dissolved

Define insoluble

Unable to be dissolved

Define dipolar

A molecule that has a separation of positive and negative charges, creating two poles, a positive and negative end

Define Anabolism

The reaction that build up larger biological molecules from smaller ones, they are known as anabolic reactions

Define catabolism

The reactions that break down large biological molecules into smaller ones they are known as catabolic reactions