CHEM 130 — Exam 1 (Streacker, 2024) | Verified
Questions & Correct Answers | Updated for 2026
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what do atoms need to decompose - ✔✔electric current
scientific method steps - ✔✔observation
hypothesis
experiment (can either go to theory or back to observation)
theory (model)
prediction
experiment (can go back to theory, theory can be modified as needed)
theory (model) - ✔✔set dof dtested dHYPOTHESES dthat dgives dan doverall dexplanation dof da dnatural
dphenomenon
- constantly drefined dor dreplaced das dmore dinformation dbecomes davailable, dlimited dto
dhuman dunderstanding
natural dlaw d- d✔✔a dsummary dof dobserved d(measurable) dbehavior
- ex: dLAW dOF dCONSERVATION dOF dMASS din dchemistry
law dvs dtheory d- d✔✔law d- dstatement don dgenerally dobserved dbehavior, dsummarizes dwhat
dhappens dtheory d- dhuman dinventions, dattempts dto dexplain dwhy dsomething dhappens
science ddrawbacks d- d✔✔focusing don da dtheory dmay dlimit done's dability dto dsee dalternative
dexplanations dscientists dare dhumans, dand dhumans dhave dprejudices
science dis daffected dby dprofit dmotives, dbudgets, dfads, dwars, dand dreligious dbelief
1.3 - dUnits dof dMeasurement d- d✔✔
,important dSI dunits d- d✔✔kg d(kilogram, dmass)
, m d(meter, dlength)
K d(kelvin, dtemperature)
mol d(mole, damount dof da
dsubstance) ds d(second, dtime)
important dSI dprefixed d- d✔✔tera d(T) d-
d10x12 dgiga d(G) d- d10x9
mega d(M) d-
d10x6 dkilo d(K) d-
d10x3 d10x0
deci d(d) d- d10x-
1 dcenti d(c) d-
d10x-2 dmilli d(m)
d- d10x-3 dmicro
d(u) d- d10x-6
dnano d(n) d-
d10x-9
mass d- d✔✔measure dof dthe dresistance dof dan dobject dto da dchange din dits dstate dof dmotion d-
dmeasure dof dmatter din dan dobject
- measured dby dthe dforce dnecessary dto dgive dan dobject da dcertain dacceleration
weight d- d✔✔force dexerted dby dgravity don dan dobject
- varies dw/ dthe dstrength dof dthe dGRAVITATIONAL dFORCE
ex: d1 dkg dball, d4.45 dNewtons dand d9.81 dm/s(2) d(on dEarth)
- on dmoon: d0.739 dNewtons, d1.62 dm/s(2), d0.166 dof dEarth
1.4 - dUncertainty din dMeasurement d- d✔✔
Questions & Correct Answers | Updated for 2026
Upload
what do atoms need to decompose - ✔✔electric current
scientific method steps - ✔✔observation
hypothesis
experiment (can either go to theory or back to observation)
theory (model)
prediction
experiment (can go back to theory, theory can be modified as needed)
theory (model) - ✔✔set dof dtested dHYPOTHESES dthat dgives dan doverall dexplanation dof da dnatural
dphenomenon
- constantly drefined dor dreplaced das dmore dinformation dbecomes davailable, dlimited dto
dhuman dunderstanding
natural dlaw d- d✔✔a dsummary dof dobserved d(measurable) dbehavior
- ex: dLAW dOF dCONSERVATION dOF dMASS din dchemistry
law dvs dtheory d- d✔✔law d- dstatement don dgenerally dobserved dbehavior, dsummarizes dwhat
dhappens dtheory d- dhuman dinventions, dattempts dto dexplain dwhy dsomething dhappens
science ddrawbacks d- d✔✔focusing don da dtheory dmay dlimit done's dability dto dsee dalternative
dexplanations dscientists dare dhumans, dand dhumans dhave dprejudices
science dis daffected dby dprofit dmotives, dbudgets, dfads, dwars, dand dreligious dbelief
1.3 - dUnits dof dMeasurement d- d✔✔
,important dSI dunits d- d✔✔kg d(kilogram, dmass)
, m d(meter, dlength)
K d(kelvin, dtemperature)
mol d(mole, damount dof da
dsubstance) ds d(second, dtime)
important dSI dprefixed d- d✔✔tera d(T) d-
d10x12 dgiga d(G) d- d10x9
mega d(M) d-
d10x6 dkilo d(K) d-
d10x3 d10x0
deci d(d) d- d10x-
1 dcenti d(c) d-
d10x-2 dmilli d(m)
d- d10x-3 dmicro
d(u) d- d10x-6
dnano d(n) d-
d10x-9
mass d- d✔✔measure dof dthe dresistance dof dan dobject dto da dchange din dits dstate dof dmotion d-
dmeasure dof dmatter din dan dobject
- measured dby dthe dforce dnecessary dto dgive dan dobject da dcertain dacceleration
weight d- d✔✔force dexerted dby dgravity don dan dobject
- varies dw/ dthe dstrength dof dthe dGRAVITATIONAL dFORCE
ex: d1 dkg dball, d4.45 dNewtons dand d9.81 dm/s(2) d(on dEarth)
- on dmoon: d0.739 dNewtons, d1.62 dm/s(2), d0.166 dof dEarth
1.4 - dUncertainty din dMeasurement d- d✔✔
