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Science test chp 6
| Question | Answer |
|---|---|
| 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
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