Term
| "The characteristics of a substance that can be observed without changing the identity of the substance." This is the definition for what? |
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Definition
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Term
| What is the unit we commonly use for volume? |
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Definition
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Term
| Is the formation of bubbles a physical property or a chemical property? |
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Definition
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Term
| If a book weighs 800 grams, what physical property am I describing? |
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Definition
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Term
| "The measure of the amount of matter present in a given volume of a substance." This defines what? |
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Definition
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Term
| Which is more dense, a box full of lead or the same size box full of cotton balls? |
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Definition
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Term
| What is the formula for density? |
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Definition
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Term
| A baseball has a volume of 10cm3 and a mass of 20g, what is the density of the ball? |
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Definition
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Term
| Is breaking a piece of clay in half a physical change or a physical property? |
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Definition
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Term
| If I break a piece of clay in half, name a physical property that I have changed? |
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Definition
| size, shape, volume, or mass |
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Term
| Scraping blue paint off of a painting, is this a physical change or a physical property? |
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Definition
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Term
| Chemical properties describe how substances can form ________ substances. |
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Definition
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Term
| The ability to burn is a chemical property. Name another? |
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Definition
| the ability to rust, the ability to tarnish |
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Term
| "The change of one substance into another substance." This defines what? |
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Definition
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Term
| Give one example of a chemical change? |
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Definition
| iron rusting, wood burning, eggs cooking, spoons tarnishing |
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Term
| What are three signs of a physical change? |
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Definition
| change in color, shape, size, taste, texture, the ability to bend, mass, volume, density |
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Term
| What are the 3 states of matter? |
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Definition
| solid, liquid, gas, (plasma) |
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Term
| What is the process by which a solid becomes a liquid? |
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Definition
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Term
| "The lowest point at which a substance begins to melt." This defines what? |
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Definition
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Term
| What is the melting point of ice? |
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Definition
| 32o Fahrenheit or 0o Celsius |
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Term
| Freezing is the process by which a __________ becomes a solid. |
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Definition
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Term
| Touching an object that is "frozen" is always cold to the touch. True or false. |
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Definition
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Term
| The freezing point of a substance is the same as the ___________ of the substance? |
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Definition
| melting point, water freezes at 32o F and ice melts at 32o F |
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Term
| "The process by which a liquid becomes a gas. " This defines what? |
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Definition
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Term
| Evaporation usually occurs where in a liquid? |
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Definition
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Term
| Subtances have specific, or exact, temperatures at which they evaporate. True or False. |
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Definition
| False. Water, for example, evaporates over a wide range of temperatures. |
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Term
| What do you call it when a solid changes directly into a gas? |
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Definition
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Term
| Name one example of sublimation. |
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Definition
| dry ice (frozen CO2) turning into gas |
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Term
| What must be produced for boiling to occur? |
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Definition
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Term
| Are bubbles during the boiling process created at the top, in the middle , at the bottom, or all throughout the liquid? |
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Definition
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Term
| What do we call the specific temperature at which a liquid boils? |
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Definition
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Term
| Is it possible for something to boil at hundreds of degrees below zero? |
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Definition
| yes, for example helium boils at -454 degrees below 0 |
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Term
| Gas changing to a liquid describes what? |
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Definition
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Term
| When you increase temperature you increase the _______ of a substance. |
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Definition
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Term
| Are the clouds an example of condensation? |
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Definition
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Term
| Which has more energy: a solid, a liquid, or a gas |
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Definition
| gas. this is why the particles move around so quickly |
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Term
| Condensation on a glass of iced tea occurs when warm water vapor in the air is cooled down by the surface of the cold glass. The water vapor slowly turns to what? |
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Definition
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Term
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Definition
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Term
| Describe two types of texture. |
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Definition
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Term
| Is volume a physical property? |
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Definition
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Term
| Mass is measured in what common unit? |
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Definition
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Term
| What physical property would I use if I wanted to remove salt that is mixed with pepper? You cannot remove it by hand and you cannot run it through a filter. |
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Definition
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Term
| What word are we describing? "How well an electrical current runs through a substance." |
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Definition
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Term
| What is a better conductor of electricity, metal or paper? |
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Definition
| metal. metals are known for their good conductivity! |
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Term
| What is a better conductor of heat, wood or copper? |
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Definition
| copper. wood is a poor conductor of heat! It burns well but heat does not pass through wood well. |
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Term
| Define the word "precipitate." |
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Definition
| when two liquids combine to form a solid |
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Term
| What physical property would be best used to separate small pieces of iron from a pile of dirt? |
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Definition
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Term
| Why does water boil at a lower temperature in the Rocky Mountains? |
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Definition
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