Vocabulary for Ch 1 and CH 2

slight attraction that develops between oppositely charged regions of the nearby molecules. it is a weak force

signal that organisms respond to

neutral or no charged particle that makes up part of the nucleus of the atom

bonding between two or more atoms that are sharing an electron

the center of the atom

chemical bond that forms when one or more electrons is transferred from one atom the the other

an element that has different number of neutrons but the same number of protons (ex: carbon-12)

what is being dissolved

weak attraction between hydrogen and another atom

logical interpretation that is based on prior knowledge/experience

a well-tested explanation, has many hypothesis and experiments to back it up.

favoring someones side because you know them instead of favoring the correct facts

pure substance, entirely made up of one atom

compound produces hydroxide (OH-) in a solution pH is more than 7

a type of mixture which all components are evenly distributed

the dissolving substance in a solution

scale that is used to measure the concentration of H+ ions in solution (1-14)

only one variable is changed in the experiment

constant internal physical and chemical conditions that organisms maintain

reproduction that takes cells from two parents to form the first new cell to a new organism

positive charged particle that makes up part of the nucleus

chemical reactions that build up or break down materials within the organism

attraction between two different molecules

a substance formed by a chemical reaction, either two or more elements in definite proportions

change over time

variables observed and they change due to the response of the deliberately changed variable, responding variable

compound that forms hydrogen ions (H+) in solution pH is less than 7

group of atoms bonded together, smallest unit of a chemical compound

the group that is exposed to the same condition as the experimental group except for one independent variable

noticing and describing events or a process in an orderly way.

the variable in a controlled experiment that is changed on purpose (manipulated variable)

negative particle that circles the outside of the nucleus stays on its cloud

attraction between the same molecules

evidence you got from the experiment

your genetic makeup that organisms get from there parents

only has one parent and is an identical copy from that parent

if then statement, a possible explanation for a set of observations, or it can be an answer to a scientific question

basic unit of matter

study of life

mixture of water and non dissolved material

atom with positive or negative charge

two or more elements or compounds that are physically mixed together but not combined chemically

compound that prevents sharp sudden changes to the pH