Transcript Mass & Volume
Heating Baking Soda Water Displacement Operate a Balance Sensitivity of a Balance Mass & Volume
Player 1 Player 2 0 0 Player 3 Player 4 0 0
Heating Baking Soda What was the purpose of the water in the inverted bottle in Lab 1.1?
Heating Baking Soda Answer for 5 Points Collection of gas by water displacement
Heating Baking Soda What could you tell from the “Heating of Baking Soda” experiment alone?
Heating Baking Soda Answer for 10 Points Baking soda can be broken down into liquids, gas, and solids.
Heating Baking Soda What was collected by the inverted bottle in Lab 1.1?
Heating Baking Soda Answer for 15 Points Gas-CO 2
Heating Baking Soda What was the purpose of the tea test?
Heating Baking Soda Answer for 20 Points To determine if heated baking soda was still baking soda or something else
Heating Baking Soda
Which baking soda/tea mixture was darker?
Heating Baking Soda Answer for 25 Points The Heated Baking Soda
Water Displacement
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A group of 100 identical marbles having a total mass of 125 g are poured into a graduated cylinder and found to come up to the 100 cm 3 mark. When the marbles are added to 75 cm 3 of water in a second graduated cylinder, the water level rises to the 137 cm 3 mark.
What is the volume of the air between the marbles in the first graduated cylinder, in cm 3 ?
Water Displacement Answer for 5 Points 38 cm 3
Water Displacement A beaker was partially filled with water and the water level was marked “I.” An object too large for a graduated cylinder was completely immersed in the water in the beaker and the water rose to a higher level marked “II.” The beaker was emptied and then refilled from a graduated cylinder. It took 100 cm3 to reach level “I” and 35 cm3 more to reach level “II.” What was the volume of the object?
Water Displacement Answer for 10 Points 35 cm 3
Water Displacement Enough dry sand to fill a graduated cylinder to the 20cm 3 mark was added to another graduated cylinder containing water and the level of the liquid rose 12cm 3 of the sand alone?
on the scale. What was the volume
Water Displacement Answer for 15 Points 12 cm 3
Water Displacement A beaker was partially filled with water and the water level was marked “I.” An object too large for a graduated cylinder was completely immersed in the water in the beaker and the water rose to a higher level marked “II.” The beaker was emptied and then refilled from a graduated cylinder. It took 100 cm 3 level “I” and 40 cm 3 to reach more to reach level “II.” What was the volume of the object?
Water Displacement Answer for 20 Points 40 cm 3
Water Displacement Some water was put into the graduated cylinder shown, and the water level stood as shown by the dotted line. Then an irregular solid was put into the water, and the level rose to the height shown by the solid line. What is the volume of the solid, in cm3?
Water Displacement Answer for 25 Points 15 cm 3
Operate a Balance
What is the first step in operating a balance?
Operate a Balance Answer for 5 Points Zero out the balance
Operate a Balance Laura has a cube of modeling clay whose mass she measures on a balance. She reforms it successively in each of the following shapes, finding the mass of the clay after each reshaping; a sphere, a flat disk, a hollow sphere, and a doughnut. In which shape will the clay have the greatest mass?
Operate a Balance Answer for 10 Points The mass is the same for all shapes.
Operate a Balance
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What scale reading corresponds to the position of the edge of the block shown in the figure?
Operate a Balance Answer for 15 Points 16.33
Operate a Balance Two students were unable to zero a single-pan balance regardless of how far they turned the zero adjustment knob each way. Assuming that the balance is undamaged, which of the following steps would help them zero the balance successfully?
I. Check whether all the riders are in their zero positions.
II. Check to make sure the pan is clean of debris.
III. Change the direction in which the balance is facing.
IV. Be sure the balance is on a level surface
Operate a Balance Answer for 20 Points Steps I, II, IV
Operate a Balance What is the difference between mass and Weight?
Operate a Balance Answer for 25 Points Mass is the amount of matter; weight is the effect of gravity’s force on the mass
Sensitivity of a Balance
What are you determining by finding the sensitivity of a balance?
Sensitivity of a Balance Answer for 5 Points The smallest amount of mass that the balance can record or register
Sensitivity of a Balance
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A large square of graph paper has 10 small squares along each edge, as shown in the drawing. The large square has a mass of 1.00 g. What is the mass, in grams, of a single small square?
Sensitivity of a Balance Answer for 10 Points .01 g
Sensitivity of a Balance List the steps to figure out the sensitivity of a balance.
Sensitivity of a Balance Answer for 15 Points Mass an object on the balance and then add predetermine small masses to the pan until a response can be recorded. Then add the small masses together to find the sensitivity.
Sensitivity of a Balance
Using an Single-Pan Balance, a student measures the mass of a penny three times, getting 2.470 g, 2.474 g, and 2.472 g. He finds then that a piece of paper of mass 0.008g placed on the pan causes the balance pointer to move, and a piece of paper of mass 0.0016 g causes the pointer to move twice as much. A piece of paper of mass 0.004 g causes no movement of the pointer. What is the sensitivity of the balance?
Sensitivity of a Balance Answer for 20 Points 0.008 g
Sensitivity of a Balance Number of Strips Mass (g) 0 1 2 3 4 5 6 31.06
31.08
31.09
31.11
31.13
31.15
31.16
A pebble was placed on a balance and its mass was recorded. Six identical strips of paper were added, one by one, and the combined mass also recorded. What is the Mass of one strip?
More than 0.02 g More than 0.02 g Less than 0.02 g Impossible to tell
Sensitivity of a Balance Answer for 25 Points Less than 0.02 g
Mass & Volume
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What is the volume, in cm3, of the solid figure shown?
Mass & Volume Answer for 5 Points 102 cm 3
Mass & Volume Student Katie Sarah Mitchell Rachael Ross Mass (g) 3.752
3.755
3.752
3.756
3.760
Five students used the same balance to measure the mass of a small dish. The masses they found are recorded on the table above. What is the best way to report the mass of the dish?
Mass & Volume Answer for 10 Points 3.755 g
Mass & Volume What is the volume, in cm3, of the rectangular block shown below?
Mass & Volume Answer for 15 Points 24 cm 3
a.
b.
c.
d.
Mass & Volume Which statement below about volume is NOT CORRECT?
The volume of a solid that does not dissolve in water can be found by the displacement of water.
The volume of a rectangular box is measured in terms of unit cubes.
The volume of a sphere is measured in terms of unit cubes.
Whenever substances are changed in some way, their total volume is conserved.
Mass & Volume Answer for 20 Points d. Whenever substances are changed in some way, their total volume is conserved.
Mass & Volume If you weigh 110 lbs. your mass would be _________ Kg.
Mass & Volume Answer for 25 Points 50 Kg
Authored by Jeff Ertzberger - 2004 University of North Carolina at Wilmington All rights reserved.
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