Term
| What is the difference between chemical and physical changes? |
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Definition
| Chemical changes involve quantitive changes, while physical changes involve qualitative changes |
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Term
| Name the metric conversion chart from largest to smallest and the prefixes |
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Definition
10 to the sixth= Mega
10 to the third= Kilo
10 to the negative one= Deci
10 to the negative two= Centi
10 to the negative three= Milli
10 to the negative six= Micro
10 to the negative nine= Nano |
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Term
| how do you convert decimeters to millimeters? |
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Definition
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Term
| How do you convert nanometers to centimeters? |
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Definition
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Term
| How do you convert liters to kilometers? |
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Definition
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Term
| How do you convert megameters to millimeters |
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Definition
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Term
How do you calculate density?
Volume?
Mass? |
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Definition
Density= M/V
Volume= M/D
Mass= V*D |
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Term
Matter is split into two catagories...
What are these catagories, and what are they specifically |
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Definition
| Substances (a kind of matter that cannot be physically seperated) and Mixtures (2 or more substances generated physically). |
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Term
| Substances are split into two catagories: |
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Definition
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Term
| Mixtures are split into two catagories: |
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Definition
| Homogeneous and Heterogeneous |
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Term
| How do you find the atomic mass unit (from word problem) |
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Definition
| multiply the abundance by the mass (in ATOMIC MASS UNITS). Add all of these values together in the end, and write it out by the common unit. |
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Term
| What is an example of a chemical change & property, and what is an example of a physical change and property? |
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Definition
CHEM: Iron reacting with oxygen in order to rust. A chem. property would be iron's property to react w/ oxygen in order to rust.
PHYS: A physical property would be color change, convergence of mass from one form to another, or melting point. An example would be an ice cube dissolving into water. |
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Term
| How do you calculate percent by mass? |
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Definition
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Term
| How do you calculate percent error? |
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Definition
| [(actual-theoretical)/ theoretical] x 100 |
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Term
Determine the # of sig. figs. in each of the measurements:
1)0.025
2)0.00009
3)50.19 |
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Definition
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Term
| What is the difference between accuracy and precision? |
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Definition
| Precision involves the number of sig. figs. and how well a number is represented, while accuracy determines how correct or true a measurement is |
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