Exam 1 Topics

Question 1

What is Metabolism?

Answer 1

All the chemical reactions in a cell.

Question 2

Living organisms as composed of mainly which elements?

Answer 2

• Carbon
• Hydrogen
• Nitrogen
• Oxygen

Question 3

Isotopes of an element have the same number of _____ but a different number of _____.

Answer 3

• Protons and Electrons

- Neutrons

Question 4

What is the name of an atom that gains or loses electrons.

Answer 4

Ion

Question 5

Which bond is the attraction of + and - charges?

Answer 5

Ionic Bond

Question 6

If an atom has 7 electrons in its outermost shell, how many covalent bonds would it make?

Answer 6

1

Question 7

How are hydrogen bonds different from Covalent bonds?

Answer 7

Hydrogen bonds involve interactions between partial charges while covalent bonds involve sharing electrons.

Question 8

What is the difference between a strong acid an a weak acid?

Answer 8

• Strong Acids completely ionize in water while weak acids do not completely ionize.
• Strong acids Donate H+, Weak Acids Accept H+

Question 9

pH 2 has _____ times the hydrogen ion concentration of pH 6.

Answer 9

10,000

Question 10

What is the difference between Organic and Inorganic molecules?

Answer 10

Organic molecules contain BOTH Carbon and Hydrogen while Inorganic contain only one or neither atoms.