Nature Of Life

Front 1

Goals of science

Back 1

Giving explanation for natural events, to understand pattern, and to make predictions

Front 2

Controlled experiment

Back 2

An experiment in which only one variable is changed.

Front 3

Controlled group

Back 3

The group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable

Front 4

Data

Back 4

Evidence,information gathered from observations

Front 5

Theory

Back 5

A well tested explanation that unifies a broad range of observations and hypothesis,and enables scientists to make accurate predictions about new situations

Front 6

Bias

Back 6

A particular preference or point of view that is personal rather than specific

Front 7

Wht charactertiristics do all living things share

Back 7

Living things are made of basic units called cells,are based on a universal genetic code,obtain and use materials and energy, grow and develop,reproduce,respond to their environment,maintain a stable internal environment and change over time

Front 8

Biology

Back 8

Scientific study of life

Front 9

Dna

Back 9

Genetic material that organisms inherit from their parents

Front 10

Stimulus

Back 10

A signal to which organism responds

Front 11

Homeostasis

Back 11

The relatively constant internal physical and chemical conditions than organism maintains

Front 12

Metabolism

Back 12

The combination of chemical reactions through which an organism builds up or breaks down materials

Front 13

Biosphere

Back 13

The part of earth in which life exists,including land,water,and air or atmosphere

Front 14

Scientific methodology

Back 14

Scientific methodology involves observing and asking questions, making inferences,and forming hypothesis,doing controlled experiments,collecting and analyzing data,and drawing conclusions

Front 15

What three particles make up atoms

Back 15

Proton neutron and electron

Front 16

Atom

Back 16

The basic unit of matter

Front 17

Nucleus

Back 17

The center of an atom,which contain protons and neutrons

Front 18

Electron

Back 18

Negatively charged particle;located in the space surrounding the nucleus

Front 19

Element

Back 19

Pure substance that consists entirely of one type of atom

Front 20

Isotope

Back 20

Isotope contains same number of protons, but different number of neutrons

Front 21

Compound

Back 21

Substance formed by the chemical combination of two or more elements in definite proportions

Front 22

Ionic bond

Back 22

Chemical bond formed when one or more electrons are transferred from one atom to another

Front 23

Covalent bond

Back 23

A type of bond between atoms in which the electrons are shared

Front 24

Molecule

Back 24

The smallest unit of most compounds that display all the properties of that compound

Front 25

Cohesion

Back 25

The attraction between molecules of the same substance

Front 26

Adhesion

Back 26

Force of attraction between different kinds of molecules

Front 27

Solution

Back 27

Type of mixture in which all the components are evenly distributed

Front 28

Suspension

Back 28

Mixture of water and non dissolved material

Front 29

Acid

Back 29

Compound that releases H+ ions in solution,a solution of pH less than 7

Front 30

Base

Back 30

Compound that releases OH- in solution, a solution with a pH more than 7

Front 31

Buffer

Back 31

Compound that prevents sharp,sudden change in pH