| Question |
Answer |
| balance | An instrument for measuring mass. |
| kilogram | The mass of a liter of water; 1000 grams. |
| liter | The volume of a cubic decimeter. |
| mass | The quantity of matter in an object. |
| matter | Anything that has mass and volume. |
| meter | The basic unit of length of the metric system; 39.37 inches. |
| metric system | A decimal system of measurements based on the meter; SI |
| SI | The abbreviation for the expanded metric system called Systeme International. |
| units | Descriptive notes that accompany numbers. |
| unit analysis | A mathematical tool for converting units. |
| density | The mass in a unit of volume. |
| law of mass conservation | In all chemical and physical changes, matter is neither created nor destroyed. |
| meniscus | Curve seen at a liquid's surface, especially in a graduated cylinder. |
| newtons | The metric unit of weight (N). |
| second | The basic unit of time; 9,192,631,770 vibrations of cesium atom. (s) |
| significant digits | All of the certain digits plus one doubtful digit in a measurement. |
| spring scales | An instrument for measuring weight. |
| volume | Any space defined by length, width, and height. |
| water displacement method | Measuring the volume of an irregularly shaped object by submerging it in water contained in a graduated cylinder and taking before-and-after measurements. |
| weight | The measure of the force of gravity on an object. |
| scientific notation | Using the power of 10 to express very large or very small numbers. |
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