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Unit 1
Structure & Properties of Matter (7th grade)
| Question | Answer |
|---|---|
| A universal system of measurement used all around the world in which the basic units include the meter (length), liter (volume), and gram (mass). | Metric System |
| A system of measurement, used in the US, in which the basic units include yards (length), gallon (volume), and pounds (mass). | Customary System |
| The branch of science that studies matter and its properties. | Chemistry |
| Anything that has mass and takes up space. | Matter |
| The measurement of the amount of matter in an object; commonly measured with a triple-beam balance or electronic scale. | Mass |
| The measurement of the amount of space taken up by a solid, liquid, or gas; commonly measured with a graduated cylinder or beaker, or a ruler for regular shaped objects. | Volume |
| A measurement of the mass per unit of volume. D=Mass/volume | Density |
| A measurement of the force of gravity on a person or object; measured in pounds (lbs.) | Weight |
| A science tool used to measure the mass of an object by using three separate beams with weights. | Triple-Beam Balance |
| A tall, narrow container commonly used for measuring the volume of liquids. | Graduated Cylinder |
| The standard metric unit for mass. | grams (g) |
| The standard metric unit for volume. | liters (l) |
| The standard metric unit for length/distance. | meters (m) |
| The measurement of an object or distance from one end to another; commonly measured with a meter stick or metric ruler. | Length |
| A state of matter in which particles are tightly packed and have a definite shape and volume. | solid |
| A state of matter in which particles are more loosely packed and can move; It has definite volume, but no definite shape. | liquid |
| A state of matter in which particles move quickly and freely; has no definite volume or shape. | gas |
| Also called heat energy - It is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. | thermal energy |
| The process in which a solid turns to a liquid when energy is added. (ice cream turning into cream) | melting |
| The process in which a liquid turns to a solid when energy is removed. (water turning into ice) | freezing |
| The process in which a liquid turns into a gas when energy is added. (water turning into water vapor) | evaporation |
| The process of a solid turning directly into a gas (skips the liquid phase) when a LOT of energy is added. (dry ice) | sublimation |
| The process of a gas turning into a liquid when energy is removed (water droplets on the morning grass) | condensation |
| The process of a gas turning directly into a solid (skips the liquid phase) when a LOT of energy is removed. (frost on a window in the winter) | deposition |
| a characteristic of a substance that you can observe or measure without changing what the substance is, like its color, size, or state of matter | physical property |
| a property of a substance that can only be observed when a substance reacts with other substances and changes into something new (ex: rust) | chemical property |
| a physical property related to how shiny a substance is. (ex: glass, metal, diamonds) | luster |
| a physical property describing the ability of a material to bend or be hammered into other shapes without breaking. | malleability |
| a physical property that describes ability of a substance to be drawn into thin wires. (ex: copper into copper wires) | ductility |
| a physical property that describes the ability of a substance to dissolve in a liquid. | solubility |
| a physical property that describes the ability to pass electricity or heat through a substance. | conductivity |
| a physical property that describes a substances resistance to being scratched or dented. | hardness |
| The chemical property that describes a substances ability to catch on fire. | flammability |
| The chemical property that describes a substances ability to react with oxygen. | oxidation |
| The chemical property that describes a substances ability to be poisonous. | toxicity |
| The chemical property that describes a substances ability to change when exposed to light. | sensitivity to light |
| The chemical property that describes a substances ability to react with water. | reactivity to water |
Created by:
gibbonsUMS
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