The definition of a scientific law is - correct answer -a number of similar
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observations generalized into a brief statement summarizing past observations
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and predicting new ones
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Which statement about a hypothesis is TRUE - correct answer -All of the above
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statements are true.
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Which of the following is an example of a scientific law - correct answer -In a
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chemical reaction, matter is neither created nor destroyed.
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A sample of wood with a mass of 3.0 grams was burned in an open dish. The
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ashes weighed 1.2 grams. What happened to the rest of the wood? - correct
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answer -The remaining 1.8 grams was converted into gaseous compounds.
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Which statement would NOT be an example of "quantification" - correct
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answer -The water in the swimming pool feels colder than it was yesterday.
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A popular science demonstration is to take several liquids that will not mix
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together and "stack" these liquids in a tall glass cylinder. Suppose the following
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three liquids were places in the same tall, narrow glass cylinder:
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SUBSTANCE DENSITY (g/mL) | |
, vinegar 1.01 |
motor oil 0.87 | |
corn syrup 1.36 | |
These liquids would stack in which order? - correct answer -motor oil on top,
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vinegar in the middle, corn syrup on the bottom
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Suppose a boat engine leaks 938 mL of oil into a lake. The mass of this spilled
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oil is 823 g. The oil will not mix with the lake water. Which statement is true? -
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correct answer -The oil will float because its density of 0.877 g/mL is less than
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the density of water.
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Determine the answer to the following equation with correct number of
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significant figures:
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2.02+8.102-0.0297= - correct answer -10.09 | | | |
How many milliliters are in 17.5 L - correct answer -1.75 x 104 mL
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Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in
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an ingot with the dimensions of 10.0 in x 4.00 in x 3.00 in. - correct answer -
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3.80 x 104 | |
The correct decimal representation of 6.453 x 103 is: - correct answer -6,453
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A plastic block has dimensions of 2.2 cm x 3.0 cm x 1.5 cm and a mass of 12.4
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grams. Will the block float in water and why - correct answer -No, because the
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density of the block is 1.3 g/mL which is greater than the density of water.
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observations generalized into a brief statement summarizing past observations
| | | | | | | | |
and predicting new ones
| | | |
Which statement about a hypothesis is TRUE - correct answer -All of the above
| | | | | | | | | | | | |
statements are true.
| | |
Which of the following is an example of a scientific law - correct answer -In a
| | | | | | | | | | | | | | |
chemical reaction, matter is neither created nor destroyed.
| | | | | | | |
A sample of wood with a mass of 3.0 grams was burned in an open dish. The
| | | | | | | | | | | | | | | |
ashes weighed 1.2 grams. What happened to the rest of the wood? - correct
| | | | | | | | | | | | | |
answer -The remaining 1.8 grams was converted into gaseous compounds.
| | | | | | | | | |
Which statement would NOT be an example of "quantification" - correct
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answer -The water in the swimming pool feels colder than it was yesterday.
| | | | | | | | | | | | |
A popular science demonstration is to take several liquids that will not mix
| | | | | | | | | | | |
together and "stack" these liquids in a tall glass cylinder. Suppose the following
| | | | | | | | | | | | |
three liquids were places in the same tall, narrow glass cylinder:
| | | | | | | | | | |
SUBSTANCE DENSITY (g/mL) | |
, vinegar 1.01 |
motor oil 0.87 | |
corn syrup 1.36 | |
These liquids would stack in which order? - correct answer -motor oil on top,
| | | | | | | | | | | | |
vinegar in the middle, corn syrup on the bottom
| | | | | | | | |
Suppose a boat engine leaks 938 mL of oil into a lake. The mass of this spilled
| | | | | | | | | | | | | | | |
oil is 823 g. The oil will not mix with the lake water. Which statement is true? -
| | | | | | | | | | | | | | | | | |
correct answer -The oil will float because its density of 0.877 g/mL is less than
| | | | | | | | | | | | | | |
the density of water.
| | | |
Determine the answer to the following equation with correct number of
| | | | | | | | | |
significant figures:
| |
2.02+8.102-0.0297= - correct answer -10.09 | | | |
How many milliliters are in 17.5 L - correct answer -1.75 x 104 mL
| | | | | | | | | | | | |
Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in
| | | | | | | | | | | | | | |
an ingot with the dimensions of 10.0 in x 4.00 in x 3.00 in. - correct answer -
| | | | | | | | | | | | | | | | | |
3.80 x 104 | |
The correct decimal representation of 6.453 x 103 is: - correct answer -6,453
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A plastic block has dimensions of 2.2 cm x 3.0 cm x 1.5 cm and a mass of 12.4
| | | | | | | | | | | | | | | | | |
grams. Will the block float in water and why - correct answer -No, because the
| | | | | | | | | | | | | | |
density of the block is 1.3 g/mL which is greater than the density of water.
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