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physics exam fall
Question | Answer |
---|---|
building blocks of matter and smallest parts of particles of an element | atoms |
a substance made of only one kind of atom | element |
lightest element | hydrogen |
2nd lightest element | helium |
atoms are slowest in..... | solids, liquids, gases |
said matter was made of atoms because of studying chemical reactions | john dalton |
jiggling of particles that are just large enough to be seen | brownian motion |
smallest particle of a substance consisting of two or more atoms that bond together by sharing electron | molecule |
the time it takes for one back and forth motion of a pendulum | period |
a complete back and forth motion is | vibration |
high points on a wave | crest |
low point on a wave | troughs |
distance between successive identical parts of a wave | wavelength |
distance from a midpoint to a crest | amplitude |
vibrations per unit of time | frequency |