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Science test chp 6

Atom the basic unit of all non- living things
Bohr Model a model of the atom, developed by Neils Bohr, that shows electrons moving in orbit around the nucleus of the atom
electron cloud model the model of the atom that shows electroins forming a cloud as they move around the nucleus of a atom
element matter that is made of just one kind of atom
atomic number the number of protons in a atom of an element
periodic table a chart that contains many facts about the elements and their atoms
Dmitril mendeleev russian scientist who createdthe peiodic table in the 1880s organized by atomic number
proton a subatomic particle with a positive charge found in the nucleus of a atom
electron a subatomic particle with a negative charge found around the nucleus
neutron a suatomic particle with a neutral charge found in the nucleus
there are ______ known elements 109
problem a question or problem that you can reasearch an test
reasearch the backround info about a scientific problem gained from using internet, books, etc
hypothesis predictions or an educated guess based on research
procedure the steps you will follow to solve and test a scientific problem
maaterials a list of everything you will need to test the scientific method and run the experiment
experiment the atual test of the scientific problem
data the info that is gathered during the experiment and is represented in a graph, chart, etc
observations any changes you notic during the experiment
conclusion statement aboutthe results of the experiment
theory final fatual statement about the results of the experiments applied in general terms
the ten steps of the scientific method 1.problem, 2.reasearh, 3.hypothesis, 4.procedure, 5.materials, 6.experiment, 7.data, 8.obervations, 9.conclusion, 10. theory
matter anythingthat takes up space and has mass. matter is made up of 13 kinds of atoms
Compound Asubstance formed when two or mpre elements combine chemically
Chemical bonds the forcesthat holds together the atoms in a compound
ions an atom tha has gained or lost electrons
molecule a particle formed by sharing electrons
formula a group of symbols that shows the elements in a compound
organic compound compounds that contain carbon
hydrocarbon a compund made of just tha two elements hydrogen and carbon
polymer an organic compound that consits mainly of just a long chain of carbon atoms
Created by: henrypavis