SDSMT Exam 1 Practice

Which of the following is NOT a characteristic of a good scientific hypothesis?

• It is testable

• It is based on existing knowledge

• It is vague and general

• It can be used to make predictions

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Scientific Method

Which of the following is NOT a requirement for a hypothesis to be considered scientific?

• It must be falsifiable

• It must be based on empirical evidence

• It must be a personal belief

• It must be able to predict outcomes

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Scientific Method

Which of the following is NOT a characteristic of a scientific hypothesis?

• It must be testable

• It must be based on observable phenomena

• It must be a common assumption

• It must be able to be proven wrong

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Scientific Method

Which of the following quantities is equivalent to 345 µg?

• 0.345 mg

• 3.45 g

• 0.00345 kg

• 345,000 kg

• 0.345 g

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Units

Which of the following quantities is equivalent to 500 µg?

• 0.5 mg

• 5 g

• 0.005 kg

• 500,000 kg

• 0.5 g

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Units

Which of the following quantities is equivalent to 2000 µg?

• 2 mg

• 20 g

• 0.002 kg

• 2,000,000 kg

• 2 g

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Units

You have a 200 gram sample of each of the following metals. Which sample has the smallest volume?

• Aluminum, d = 2.7 g/cm3

• Magnesium, d = 1.74 g/cm3

• Gold, d = 19.3 g/cm3

• Silver, d = 10.5 g/cm3

• Iron, d = 7.86 g/cm3

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Units

Density

You have a 300 gram sample of each of the following metals. Which sample has the largest volume?

• Lead, d = 11.34 g/cm3

• Copper, d = 8.96 g/cm3

• Platinum, d = 21.45 g/cm3

• Zinc, d = 7.14 g/cm3

• Nickel, d = 8.91 g/cm3

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Units

Density

You have a 500 gram sample of each of the following metals. Which sample has the smallest volume?

• Iron, d = 7.87 g/cm3

• Gold, d = 19.32 g/cm3

• Aluminium, d = 2.70 g/cm3

• Silver, d = 10.49 g/cm3

• Tin, d = 7.31 g/cm3

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Units

Density

You have a sample of each of the following five metals, with the mass and density of each sample given. Which sample has the largest volume?

• Al, mass = 200 g, d = 2.7 g/cm3

• Mg, mass = 150 g, d = 1.74 g/cm3

• Cu, mass = 300 g, d = 8.92 g/cm3

• Ag, mass = 250 g, d = 10.5 g/cm3

• Fe, mass = 275 g, d = 7.86 g/cm3

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Units

Density