1. Which of the following is an example of a direct
observation?
a. Measuring the amoun...
1. Which of the following is an example of a direct
observation?
a. Measuring the amount of rain that falls in a 24-hour period in a rain gauge.
b. Estimating the number of rabbits in your garden by examining the number of plants eaten
c. Determining how many people ate the school pizza by looking at trays to see if people threw away their
pizza.
d. Compiling survey results to
learn how people feel about a
2. Which of the following is an example of a good hypothesis?
A. The vinegar is the acid and the soap is the base.
B. I think the glow sticks will brighter in the hot water.
C. when placed in hot water, sugar cubes will dissolve more slowly that granulated sugar
3. Which of the following correctly matches the observation with the description?
a. The car is silver in color; quantitative
b. The car is has 3 foot pedals ; qualitative
C. The car has 4 doors; qualitative
d. The car has 1 steering wheel; quantitative -
4. Which of the following metric conversions is correct?
a. 1 meter = 1000 km
b. 1 cm = 10 dm
C. 1 mm = 10 cm
d. 1 cm = 10 mm
Answers: 1
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Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?
Answers: 3
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Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.
Answers: 1
Chemistry, 22.06.2019 16:30
How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4
Answers: 3
Chemistry, 22.06.2019 22:00
8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these
Answers: 1
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