# Density: Question Preview (ID: 21230)

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You find a piece of metal. It's mass is 5.4 grams. It has a volume of 2 cm3. What is the density? Will it sink or float? |
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a) 2.7 g/cm3 ............ it will sink | b) 3.4 g/cm3 ........... it will sink | c) 2.7 g/mL ............ it will float | d) 10.8 g/cm3 ............ it will sink | |

You have a rectangular prism made of metal. You measure the length (4 cm), width (3 cm), and height (2 cm). What is the volume of the piece of metal? |
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a) 9 cm3 | b) 6 cm3 | c) 14 cm3 | d) 24 cm3 | |

When a rock is placed in a graduated cylinder, the water level rises from 20 mL to 44 mL. What is the volume of the rock? |
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a) 12 mL | b) 20.2 mL | c) 24 cm3 | d) 64 cm3 | |

You have a rectangular prism made of metal. You measure the length, width, and height. What are you able to calculate with these measurements? |
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a) mass | b) volume | c) density | d) not enough information given | |

You find a rock. It's mass 25 grams. It displaces 5 mL of water when you put in a graduated cylinder. What is the density of the rock? Will it sink of float? |
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a) 0.5 g/cm3 .......... it will float | b) 0.5 g/cm3 ........... it will sink | c) 5 g/cm3 ............. it will float | d) 5 g/cm3 ............ it will sink | |

If an object has a greater density than water, it will ___________ if placed in water. |
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a) float | b) sink | c) can't be determined | d) | |

When a rock is placed in a graduated cylinder, the water level rises from 20 mL to 44 mL. What are you able to determine from this information? |
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a) the mass of the rock | b) the type of rock | c) the volume of the rock | d) need more information | |

If an object has a density less than water, it will ______________ if placed in water. |
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a) float | b) sink | c) can't be determined | d) | |

The density of fresh water is |
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a) 0.8 g/mL | b) 1 g/mL | c) 1.4 g/mL | d) 19.3 g/mL | |

Density of liquids is measured in which units? |
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a) g/mL | b) mL | c) g/cm3 | d) cm3 | |

Density of solids is measured in which units? |
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a) g/mL | b) mL | c) g/cm3 | d) cm3 | |

When measuring volume, 1 cubic centimeter is equal to |
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a) the volume of the object. | b) 1 mm | c) 1 mL | d) the mass of the object. | |

Density is |
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a) the amount of matter in a given mass. | b) the amount of matter in a given volume. | c) can be measured. | d) the amount of atoms in matter. | |

To calculate density, you must know the ___________ and __________. |
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a) weight and length | b) size and shape | c) weight and volume | d) mass and volume | |

What is the volume of a piece of gold that has a length (3 cm), width (3 cm), and height (2 cm)? |
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a) 8 cm3 | b) 12 cm3 | c) 18 cm3 | d) 15 cm3 | |

When you put a rock in a graduated cylinder containing 50 mL of water, the water rises to 82 mL. What is the volume of the rock? |
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a) 1.45 mL | b) 32 mL | c) 32 cm3 | d) 132 cm3 | |

What is the density of an object that has a mass of 21 grams and takes up 3 cubic centimeters? |
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a) 7 g/cm3 | b) 8 g | c) 63 g/cm3 | d) 0.7 g/cm3 | |

The density of a pure substance |
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a) changes depending on the size of the object. | b) is always the same. | c) can't be measured accurately. | d) is always greater than the density of water. | |

If you cut a piece of wood in half, the density |
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a) will increase. | b) will decrease. | c) will stay the same. | d) can't be determined. | |

You find a piece of wood floating in a lake. You break the wood into pieces. When you put them back in the water, |
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a) the small pieces float and the larger pieces sink. | b) the small pieces sink and the larger pieces float. | c) all of the pieces sink. | d) all of the pieces float. | |

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