Biochemistry Vocab #1

Question 1

Atom

Answer 1

Makes up matter

Question 2

Molecule

Answer 2

Groups of atoms

Question 3

Element

Answer 3

Pure substances

Question 4

Ion

Answer 4

Molecule with a charge

Question 5

Ionic Bond

Answer 5

Bond where electrons are transferred from one atom to the other

Question 6

Covalent Bond

Answer 6

Bond where atoms are shared

Question 7

Hydrogen Bond

Answer 7

Occurs between water molecules

Question 8

Polar

Answer 8

Part of molecule is positively charged, part is negatively charged

Question 9

Nonpolar

Answer 9

Molecule has no charged

Question 10

Cohesion

Answer 10

Attractive force between particles of the same type

Question 11

Surface Tension

Answer 11

Shaves like an elastic sheet

Question 12

Adhesion

Answer 12

Tutor active force between two different molecules

Question 13

Capillary Action

Answer 13

Water molecules ove through a substance quickly or goes up a a thin tube

Question 14

Universal Solvent

Answer 14

Water because it polar

Question 15

Homeostasis

Answer 15

A cells stable environment

Question 16

Solution

Answer 16

A homogeneous mixture n which the particles are too small to be seen

Question 17

Homogeneous

Answer 17

A mixture in which particles are too small to be seen or mixed

Question 18

Solute

Answer 18

Substance being dissolved

Question 19

Solvent

Answer 19

Substance doing dissolving

Question 20

Acid

Answer 20

Produces H+ ions; has a pH level below 7

Question 21

Base

Answer 21

Produces OH- ions, pH level above 7

Question 22

pH Scale

Answer 22

Measures level of a substance to determine if it is acid base or neutral

Question 23

Indicator

Answer 23

A chemical that changes color in the prescence of a base or an acid

Question 24

Buffer

Answer 24

Controls the pH of the body

Question 25

Atom

Answer 25

The building blocks of matter