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33 Cards in this Set
- Front
- Back
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What is the density of 50.0ml of a liquid that has a mass of 100g?
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D=Mass/Volume Mass=100g Volume=50ml
100g/50ml=2g/ml is the density |
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What is the density of 30.0ml of a liquid with a mass of 90g?
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D=Mass/Volume Mass=90g Volume=30ml
90g/30ml=3g/ml is the density |
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A ice cube with a mass of 33g and a density of 9g/cm is cut into three equal pieces. Is the density of the smaller pieces equal to the density of the larger? Yes/no and why?
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Yes the density is equal. As long as the substance is not chemically altered, the density will remain because the density of a substance does not change simply because of a change in sample size.
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What type of particle motion do gasses display?
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Fly
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If you are told that an object is denser than water would you expect it to float or sink?
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Sink
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How many millimeters are in 12.1 centimeters?
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121mm
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How many centimeters are in 7.8 meters?
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780=7800mm
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If you want to decrease the density of students in a classroom, without changing the number of students, what could you do?
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Increase the size of the classroom, you'll be increasing the volume of the room while keeping the same mass of students, density will decrease.
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This week you calculated the density of different materials. Describe two different ways to find the volume of a solid.
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A. Length X Width X Height
B. Volume subtractive method-find the volume of a appropriate liquid in a graduated cylinder. Add your material and record your new volume. Subtract the original volume from the new volume and the difference is equal to the volume of your substance. EG: Volume of cylinder with rock in it: 60 ml Original Volume of the cylinder: 45ml Volume of the rock: 15ml |
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What are the steps of the scientific method?
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A Fat Turtle Ate Dead Cats...
Ask a Question Form a hypothesis Test your hypothesis Analyze your results(draw graphs here) Discuss your results Communicate your results |
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Explain what a Hypothesis, Theory, and Law are.
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Hypothesis-Possible answer to a question based on your prior experience.
Theory- A hypothesis that has been tested multiple times and not yet proven wrong Law-A theory that seems to work for a given situation every time. |
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If you are testing which brand of glove is the most waterproof, what is the independent variable?
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Brand of glove
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If you are testing which brand of speaker is the loudest, which is the dependent variable?
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How loud the speaker is.
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What is density?
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The amount of mass in a volume (space)
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What is a pivot?
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The point around which other things rotate-center of the pendulum....
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Why do things sink in water?
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They are denser than water
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The density of BPA is 5.0 g/cm3. If jake has a sample of pure BPA with a mass of 15g, what is the volume of the sample, to the nearest hundredth?
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Volume=Mass/Density Mass=15g Density=5.0 g/cm3
15g/5g/cm3=3cm3 |
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Ari poured 50ml of water into a graduated cylinder. Then she added a stone with a mass of 20 grams and the water in the cylinder rose to 70ml. What is the density of the stone?
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Volume=70ml-50ml=20ml
Density=20grams/20ml=2g/ml |
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What is the density of a solid with the dimensions 10cm long, 5cm wide, 5cm high with a mass of 500g?
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Volume 10cm x 5cm x 5c= 250cm3
Density=m/v 500g/250cm3= 2g/cm3 |
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When fresh and toxic sludge come into contact, the toxic sludge will flow under the fresh water. With what you know about density, what does this tell you about fresh water?
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The fresh water is less dense than sludge.
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Draw a picture of how these substances would layer up if mixed together. Diesel Fuel .88 g/ml, Tar 13.6g/ml, Oil 1.2 g/ml, Rubber .26 g/ml
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Rubber
Fuel Oil Tar |
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If a bottle of salad dressing has a volume of 500ml, what does the word volume mean?
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How much salad dressing the bottle holds-500ml of liquid
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What is the name of the tool most commonly used to find liquid volume in a Science Class?
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Graduated Cylinder
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Describe BOTH steps for properly reading the tool commonly used to measure liquid volume in Science Class.
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Get eye level with the meniscus, read from the bottom of the meniscus.
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Describe the shape and volume characteristics of a liquid.
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No definite shape, Definite Volume.
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Describe the particle motion displayed by liquids.
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Sliding
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What does the term "matter" mean in Science class?
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Anything with mass and volume. Matter is the stuff that makes everything up.
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What is the name of the tool used in Science class to find the mass of a solid?
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Balance
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If you are finding the mass of a solid, what does the term mass mean?
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The amount of matter that makes the solid up-how much wood, plastic, rock or whatever.
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What is the formula for finding the volume of a solid?
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Length x Width x Height
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When you record volume, why are the units always cubed?
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Your multiplying three numbers together that all involve cm....
Length cm x Height cm x Width cm |
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Describe the shape and volume characteristics of a solid.
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Definite shape, Definite Volume
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Describe the particle motion displayed by a solid.
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Vibration
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