Chapter 2

Question 1

Which particle in an atom has a positive charge?

Answer 1

protons

Question 2

Which two particles have weight associated with them?

Answer 2

Protons and neutrons

Question 3

Which two particles are found in the nucleus of an atom?

Answer 3

Protons and neutrons

Question 4

What is formed when two or more atoms unite?

Answer 4

Molecules

Question 5

What are molecules subunits of?

Answer 5

Covalently bonded substance

Question 6

What type of mixture is homogeneous, where one compound dissolves in another?

Answer 6

Solutions (table salt in water)

Question 7

What type of mixture is heterogeneous, where one compound separates out?

Answer 7

Suspensions (solid is suspended in liquid)

Question 8

In which chemical bonds do atoms share electrons?

Answer 8

Covalent bonds

Question 9

In which chemical bonds are electrons transferred from one atom to another?

Answer 9

Ionic bonds

Question 10

What type of pH reading is less than 7.0?

Answer 10

acid

Question 11

How much more acidic is a pH level of 3.0 when compared to a pH level of 6.0?

Answer 11

Ph level 3.0 is 3.0 more acidic compared to ph level 6.0

Question 12

Oxygen has an atomic number of 8. How many electrons are present in O-2?

Answer 12

8 electrons

Question 13

Nitrogen has an atomic weight of 14. How many neutrons are in the isotope Nitrogen-17?

Answer 13

10 neutrons

Question 14

What is the most abundant compound in the body?

Answer 14

Water (H20)

Question 15

What is the most abundant element in the body?

Answer 15

Oxygen

Question 16

What are the three organic compounds in the body?

Answer 16

Carbs , lipids , proteins

Question 17

Which of these is not a carbohydrate: Glycerol, Glycogen, Polysaccharides, or Starch?

Answer 17

Glycerol

Question 18

Which of these is an organic substance: NaCl, Water, Phospholipids or O2?

Answer 18

Phospholipids

Question 19

Which category are enzymes examples of: Carbohydrates, Proteins, Lipids, or Nucleic Acids?

Answer 19

Proteins