Bio Ch. 219 cards

Tagged as: astronomy, biochemistry, nursing, chemistry, computer science, microbiology, biology, geography

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1

Subatomic particles that make up atoms

Protons, Neutron, and Electrons

2

Nucleus

Center of the Atom Protons and neutrons

3

Ionic Bond

forms when one or more electrons are transported from one atom to another

4

Covalent Bond

forms when electrons are shared between atoms

5

Van Der Waals Forces

slight attraction that can develop between the oppositely charged regions of nearby molecules

6

Cohesion

an attraction between molecules of the same substance

7

Adhesion

attraction between molecules of different substances

8

Mixture

formed by two or more elements or compounds that are physically mixed together but not chemically joined

9

Solution

mixture of 2 or more substances in which the molecules of the substances are evenly distributed

10

Solute

the substance dissolved in the solution

11

Solvent

the substance in which the solute dissolves

12

PH Scale

indicates the concentration of hydrogen ions in a solution

13

Acid

have pH values below 7

14

Base

have pH values above 7

15

Buffer

weak acids or bases that can react with strong acids or bases to prevent sharp sudden changes in pH

16

RNA

-ribo nucleic acid -type of nucleic acid - contains sugar ribose

17

DNA

dioxi ribo nucleic acid other type of nucleic acid - contains sugar deoxiribose

18

Chemical reaction

process that changes one set of chemical into another

19

12 levels of organization

Atoms Molecules Organelle Cells Tissue Organs Organ system Organism Population Community Ecosystem Biosphere