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science chp 6
lessons 1 and 2
| Term | Definition |
|---|---|
| atom | basic building block of all non-living matter |
| nucleus | center part of the atom that contains the protons and neutrons |
| protons | positive sub-atomic particle (+) |
| neutrons | neutral sub-atomic particle (o) |
| electrons | negative sub-atomic particle (-) |
| Bohr model | a model of the atom, developed by Danish scientist, Niels Bohr, that shows electrons moving in orbit around the nucleus of the atom |
| electron cloud model | the model of the atom that shows electrons forming a cloud as they move around the nucleus of the atom |
| element | matter that is made of just one kind of atom |
| atomic number | the number of protons in an atom of an element |
| periodic table | a chart that contains many facts about the elements and their atoms |
| Dmitri Mendeleev | a Russian scientist who in 1886 created the periodic table of the elements arranged by number and family |
| Neils Bohr | danish scientist who developed the bohr model of the atom |
| atomic mass | weight of the atom |
| energy levels | levels of electrons in the atom |
| metals | shiny, can be shaped, good conductors of heat and electricity ex-iron (Fe) |
| non-metals | dull, can not be shaped, not good conductors of heat and electricity ex-hydrogen (H) |
| semi-metals | shares properties of both metals and non-metals ex-silicon (Si) |
| noble gases | don't combine easily with other elements ex-helium (He) |
| family | a group of elements found vertically on the periodic table having similar characteristics |
| problem | a question or problem that you can research and test |
| research | the background info about a scientific problem gained from using the internet, books, etc. |
| hypothesis | predictions or an educated guess based in the research |
| procedure | the steps you will follow to solve a scientific problem |
| observations | any changes you notice during the experiment. could be in the form of smell, change in matter, size, shape, color, etc. |
| data | the info that is gathered during in the experiment represented in a table, chart, graph, etc. |
| conclusion | statement about the results of the experiment. states whether hypothesis was true, false, partially true |
| theory | final factual statement about the results of the experiment applied in general terms |
| order of the scientific method | problem, research, hypothesis, procedure, materials, experiment, data, observations, conclusion, and theory |
Created by:
tsburke
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