science test sig, figs

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draw 3 tempeture scales...?

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how many cm3 does 35.6 m equal?

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what are the rules for electric balence

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what are the four rules for sig figs?

1. digits other than 0 are always signifcant 2. all final 0's used after tyhe decimal point are significant 3. 0's between 2 other sig figs are always significant 4. zeros are yoused as placeholders after the decimal point are not significant

what is scientifice notation

1.3x10^3

what is the quasian for density

D=M/V

how many estimated digits can you have when makeinf a measurment?

`3

what sthe equasion for absoute and percent error?

absolute-- (lab answer)-known answer from table percent error- absolute error/ known answer from table x100

diffrence between accuracy and precsion

accuracy-how close you are to the accepted values percision- how reproducable your results are--more sig fgs

what is an element? how may it occour naturlly?

element- made up of one atom. organic substances

what are the SI basic units?

go to the table

what element do all living things have in them?

matter

what is weight?

measure of a force of gravity

what is a qualitive measurment?

measurement made up from an observation, not numbers

what is quantitive measurment?

measurment yourung #'s and units

what is the quasion for specific gravity?

mineral weight in air / (air-water)

kool aid, whitch is the solution, and whitch is the solvent

mix- solutiion water: solvent

whats tghe diffrence between a mixture and a substance

mixture: material that is made up of 2 or more substances that are NOT chemicly bonded substance: fixed composition with fixed properties

what 2 factors control if you have quality measurment?

percision oif the instrument, and the person taking the measurment

draw the summery diagram for matter

refer to practivce test

rounding sig figs for additions and subtraction?

smallest #of decimal plates in the the caculations

what are the rounding rules for sig figs when using (x+/)?

smallest #of sig figs

what is chemestry?

study of matter ad how it changes

what is a significant figure?

the # of numbers in a answer

what is specific gravity

the comparison ofo mineral weight in air and mineral weight in water.

why does your weight change on other planets?

the gravitational pull

what is density?

the mass of an object compared to its volume

homogeneous mix?

usually liquid, mixed for you can not see the individual parts

what is meniscus? what part of it do you need to record your measurment?

when one side of the molocule is positive and one is negative. you need the bottem of the curve in your measurment

what is a compound?

when you bond 2 or more elements together

what is a heterogeneous mixture?

where you can see the individual parts: trail mix

why does you mass nomt change on other planets?

you stil take up the same amount of room


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