Semester 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What's the relationship between exponents & #s <1? | #s <1 has a + exponent.
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| What's the relationship between exponents & #s >1? | #s >1 has a - exponent.
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| How can 1.45*12^5 be expanded into the decimal #? | You move the decimal R 5x.
145,000
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| How can .000560 be written in scientific notation? | You move the decimal L 4x.
5.6*10^-4
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| What #s are always significant? | Non0 #s
0s between non0 #s
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| What #s are never significant? | 0s at the beginning of a #.
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| When are 0s significant? | 0s at the end of a @ are only significant if there's a decimal.
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| How do you +/- significant #s? | Answer can have as many decimal places as the least precise # in the problem.
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| How to */divide significant #s? | Answer can only have as many sigfigs as the least amount of sigfigs in the problem.
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| Bar graphs are used for? | Comparing quick & easy data
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| Pie graphs are used for? | Showing percentages
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| Line graphs are used for? | Looking at changes over time
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| What's accuracy? | Correctness
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| What's precision? | Close togetherness
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| What's dimensional analysis? | A mathematical way to show a conversion of #s & units.
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| What's are the dimensional analysis steps? | Read the problem & circle the units & #s
Draw T chart & write given info in upper left
Drop units
Check given equalities
Write opposite equality
Move #s to T chart
Cancel units
* #s at top & divide # @ bottom
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| Physical property: | Can be observed without changing the sample's composition
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| Extensive physical property: | Depends upon amount of substance present
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| Intensive physical property: | Independent of amount of substance present
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| Chemical property: | Ability of a substance to combine w/or change into 1+ substances
ALWAYS INTENSIVE
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| Physical changes: | Doesn't change its composition
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| Chemical changes: | Process that involves 1+ substances forming a new substance
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| Solid has: | Definite shape
Definite volume
H density
L ke
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| Liquid has: | N definite shape
Definite volume
M density
M ke
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| Gas has: | N definite shape
N definite volume
L density
H ke
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| What's matter? | Anything that has volume & mass
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| What's a pure substance? | A substance that can't be broken down into smaller pieces physically.
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| What's an element? | Smallest form of matter that has specific properties
Found on the periodic table
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| What are compounds? | Molecules formed by elements
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| What's a mixture? | A mixture that can be broken down physically
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| What are solutions? | Solude dissolved into a sovent to make a uniform/homogeneous mixture.
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| What are heterogeneous mixtures? | A mixture that's visibly distinguishable.
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| Protons | +
Located in nucleus
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| Neutrons | 0
Located in nucleus
Mass #-(+)
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| Electrons | -
Electron cloud
(+)-charge
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| Atomic # | # of protons in an atom
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| Mass # | (+)+(0)
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| Charge of an Atom | (+)-(-)
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| Isotopic notation | Mass # Symbol Charge
Atomic #
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
AllyPrincessBunny
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