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parts of an atom neutron, proton, electron
element matter made of only one kind of atom
endothermic absorb heat energy
Exothermic releases heat energy
heterogeneous A mixture where substances are not mixed
homogeneous contains two or more substances that are evenly mixed on a molecular level but still not bonded together
Mixture when 2 or more substance come together but dot combine to make a new substance
substance matter that has the same composition & properties
density-D=M/V Another measurable physical property related to mass & volume
states of matter solid, liquid, gas, plasma
chemical property something which is inherent to a substance and cannot be changed, something like the age of humans
chemical change the change in a substance through chemical reactions . (un-doable
physical property the outward appearance of an object, something which can be changed,like-u can hammer a cube to make it flat, at the same time increasing its length
physical change a substance change, but the identity of the substance does not change
sound waves produced by a vibrating object
properties waves have depend on the vibrations that produce that waves.
reflection-A.K.A-law of reflection the the angle that the incoming wave makes with the normal=the angle the outgoing wave makes with the norma
refraction the change in direction of a wave when it changes speed as it travels from one material to another
electromagnetic waves that can travel through matter or through empty space
electromagnetic spectrum the complete range of electromagnetic wave frequencies & wavelengths
Created by: sara jebril
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