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17 Cards in this Set
- Front
- Back
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What is matter?
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Anything that has mass and takes up space.
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What is mass?
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A measurement that reflects the amount of matter
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What is weight?
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A measure of the amount of matter and also the effect of Earth's gravitational pull on that matter.
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What is the difference between mass and weight?
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Mass remains the same no matter where it is, while weight changes as it's position on Earth changes.
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Why do scientists use mass instead of weight for their measurements.
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Because mass remains the same no matter where on Earth the measurement is taken.
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How would your mass and weight differ on the moon?
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??
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What is the Systeme Internationale d'Unites (SI Units)
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internationally accepted unit of measurement: a unit adopted for international use under the Système International d'Unités in science and technology
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What is a base unit?
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A defined unit in a system of measurement that is based on an object or event in the physical world and is independent of other units.
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What are the 7 SI Base Units and what do they measure?
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meter (length)
kilogram (mass) second (time) ampere (electric current) kelvin (temperature) candela (luminous intensity) mole (amount of substance) |
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How do you convert Celsius to Kelvin?
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K = C + 273.15
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How is a derived Unite different from a base unit?
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A base unit is is independent of other units while a derived unit is a combination of base units.
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What is the formula for density?
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Density = Mass / Volume
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What is the formula for mass?
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Mass = Density x Volume
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What is the formula for volume?
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Volume = Mass / Density
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Accuracy
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How close a measured value is to the accepted value.
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Precision
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How close a series of measurements are to one another.
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Wat is the law of conservation of mass?
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Mass is neither created not destroyed in a chemical reaction.
The mass of the reactants equals the mass of the products. |
