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Science Review

QuestionAnswer
How is the periodic table arranged? By atomic numbers.
What stage is the sun at? Main sequence.
Where are protons and nuetrons located at in the atom? In the middle of the nucleus.
Where are electrons located at? They surround the nucleus.
What is a bohr model? It represents an atom.
Is burning a peice of paper physical or a chemical change Chemical change.
Is melting ice a physical or chemical change? Physical change.
What are light years used for mesasuring? To find distance between stars and Galaxys
What is Astromoical units or AU used for? To measure the distance between planets.
How is speed measured? Average speed= Total distance/Total time
How is velocity measured? Velocity= Distance/ Time+direction
how many molicules are in the compound 5CO? 5
If the wave has long waves does it have a high or a low ferquency? Low.
When you stretch a rubberband all the way does it have kinetic or potential energy? Potential energy.
What stage is the sun at? Main sequence.
What is a galaxy made up of? Dust, gas,and stars.
Created by: msm1234
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