Unit 1 Questions JK
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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show | Significant digits are the certain digits in a measurement as well as one uncertain digit which you have estimated.
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show | It is calculated by dividing the difference between the true value and the measured value by the true value and multiplying by 100. This takes human error into account, as humans can never be 100% accurate
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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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show | Numbers with no uncertainty in their value, such as "a dozen" or "1"
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How do you know how many sig figs to use in the answer when adding and subtracting sig figs? | show 🗑
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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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show | Only like quantities can be added and subtracted
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show | Units are important because they name the quantity measured
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Why are the SI Units important to measurement? | show 🗑
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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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show | The basic SI units do not describe all dimensions
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show | Area is the amount of surface something covers, and requires 2 dimensions to measure it
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What is volume and why does it require derived quantities? | show 🗑
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show | It makes interpretations easier to make
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show | Graphs are useful when portraying a proportional relationship
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show | A perfect curve or line rarely happens with real data; a best-fit line or equation can help make interpretations easier to make
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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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show | Graph the proportion m/v as the slope
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How can you use graphs to find density? | show 🗑
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What are the properties of matter? | show 🗑
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show | A change that produces a new kind of matter with different properties
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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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What is a liquid? | show 🗑
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What is a gas? | show 🗑
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What is a mixture? | show 🗑
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What is a pure substance? | show 🗑
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show | Distillation, electrolysis, heat
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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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show | Boiling point, freezing and melting point
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show | Pure substances have a constant melting and freezing point; mixtures do not
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show | Pure substances have a constant boiling point; mixtures do not.
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show | Electrolysis, heat
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show | Because if it conducts elecricity, electrolysis can be used
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What is electrolysis? | show 🗑
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What does the electrolysis of water do? | show 🗑
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How are decomposition and distillation different? | show 🗑
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show | If it can be decomposed further, it is a compound. If it can't, it is an element
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What is an element? | show 🗑
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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.
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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:
johnkosch94
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