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25 Cards in this Set
- Front
- Back
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6 steps of the scientific method for chemistry |
State the problem Gather info Form a hypothesis Experiment Collect data Draw a conclusion |
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Hypothesis definition |
Educated guess |
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Has no numbers Descriptive |
Qualitative measurement |
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Measures an amount Has numbers |
Quantitative measurement |
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Condition that remains constant |
Control |
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Whatever is being studied |
System |
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Whatever is surrounding the system |
surroundings |
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Conditions that change |
Variable |
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Used to represent theories |
Model |
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The best info about a topic present day Not every idea can be this |
Theory |
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How long can it take for theories to become credible |
Decades |
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An experiment must be ___ to become a theory |
Re-created en masse |
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Theories explain |
Why something is the way it is |
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States something is what it is Doesn't explain WHY |
Law |
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All measurements include |
A number and unit |
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3 important prefixes |
Milli Centi Kilo |
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Mass root word |
Gram |
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Volume root word |
Liter |
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Length root word |
Meter |
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1,000 milligrams=? Grams |
1 |
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100 centigram=? Grams |
1 |
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1,000 grams=? Kilograms |
1 |
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Density of water |
1 g/Ml |
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Density formula |
Density equals mass divided by volume |
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4 rules for sig figs |
All numbers 1-9 are significant Leading zeroes are never significant Zeroes between sig figs are significant Zeroes at the end are significant if there's a decimal point you can see |
