chemistry homework

short-answer

1. Explain  the following statement about water describe how the atomic/molecular properties of the H2O can explain this statement: Water molecules are cohesive. 

2. Explain how the atomic/molecular properties of the H2O can explain this statement: The temperature of liquid water rises and falls slowly. 

3. Imagine yourself as a tiny proton that resides inside the nucleus of a Helium atom. Describe what you see and feel from the inside out. 

4. Imagine yourself as a tiny electron that orbits around the nucleus of a hydrogen atom. Describe how your life is changed when that hydrogen atom is joined in a covalent bond with an Chloride ion (Cl-) to form the small molecule, HCl. Describe your view from inside this molecule. 

 extra credit will be given, depending on the complexity of your answer

5. The amino acid sequence of the protein is important in what level of protein structure?

primary

secondary

tertiary

quaternary

6.What accounts for the high degree of variability between different proteins?

the R groups

the central carbon

the amino group

the carboxyl group

7. Which of the following is a type of lipid that is produced in the liver?

Chyme

Cholesterol

Glycogen

Starch

Cellulose

8. Sodium (Na) has an atomic number of 11 and an atomic mass of 22.99. How many protons does it have?

6

8

11

22

23

9. Look at the Periodic Table. What is the most notable property that Carbon (C) has in common with Silicon (Si)?

C has one more orbital than does Si.

C and Si have the same number of electrons.

Si has one more proton and one more neutron in its nucleus than does C.

C has the same shape and binding properties as does Si.

10. Refer the Periodic Table. Which best describes the relationship between Carbon (C) and Nitrogen (N)?

C has one more orbitals as does N.

C and N have the same number of electrons.

N has one more proton and one more neutron in its nucleus than does C.

N has the same shape and binding properties as does C.