Unit 1 Questions JK
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| What are significant digits? | show 🗑
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| What is percent error and why is it important | show 🗑
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| show | Record to the correct number of sig figs
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| show | You may have one estimated digit
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| show | They pertain to all measurements
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| show | The number of sig figs is determined by the precision of the instrument
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| show | When multiplying or dividing sig figs, the measurement with the fewest sig figs determines the number of sig figs in the answer
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| What are exact numbers and what are some examples? | show 🗑
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| show | When adding and subtracting, the measurement with the fewest digits after the decimal place determines how many sig figs are allowed to trail the decimal place in the answer
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| show | If the last sig fig before the five is odd, round up. If the last sig fig before the five is even, round down. If the five is followed by non-zero digits, round up
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| show | The rules of math must be adapted to handle quantities
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| What is the rule involving addition and subtraction of quantities? | show 🗑
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| show | Units are important because they name the quantity measured
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| show | They ease communication among scientists throughout the world
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| show | A meter
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| What are the SI prefixes used in converting units? | show 🗑
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| Why are derived quantities needed? | show 🗑
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| show | Area is the amount of surface something covers, and requires 2 dimensions to measure it
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| show | Volume is area times height, and requires 3 dimensions to measure it
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| Why is it necessary to record information in different manners (tables and graphs)? | show 🗑
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| In what situations are graphs useful? | show 🗑
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| Why is graphing real data difficult, and what can be done? | show 🗑
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| What is the most common reason for uncertainty in measurements? | show 🗑
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| What is a best-fit line? | show 🗑
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| show | The proportion between mass and volume m/v
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| How do you graph density? | show 🗑
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| show | The slope of the line is the density
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| show | Characteristics that allow you to distinguish one kind of matter from another
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| What is a chemical change? | show 🗑
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| How are physical changes different from chemical changes? | show 🗑
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| show | Baking soda and vinegar forming bubbles, liquid bleach cleaning stains
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| How are solids, liquids, and gasses different? | show 🗑
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| How is the particle model for matter useful? | show 🗑
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| show | A substance with definite volume and shape
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| show | A substance that flows and takes the shape of its container`
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| show | A substance that takes the shape of and fills its container
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| What is a mixture? | show 🗑
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| show | Matter that CANNOT be physically separated into component parts
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| What are means of separating substances? | show 🗑
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| show | Distillation`
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| What are solutions? | show 🗑
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| What happens to the solids dissolved in a solution? | show 🗑
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| show | Distillation
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| What are characteristics of pure substances? | show 🗑
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| show | Pure substances have a constant melting and freezing point; mixtures do not
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| How does a boiling point identify a pure substance? | show 🗑
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| show | Electrolysis, heat
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| Why is knowing if a substance conducts electricity important? | show 🗑
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| show | Passing an electric current through a substance, causing it to decompose into new kinds of matter
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| show | It separates it into components; Hydrogen and oxygen
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| show | Distillation is a physical process, the other is chemical
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| How do pure substances differ? | show 🗑
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| What is an element? | show 🗑
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To hide a column, click on the column name.
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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:
johnkosch94
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