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Matter and Density
Matter, Ratio of Mass and Volume
| Question | Answer |
|---|---|
| the amount of matter a material contains | Mass |
| a pure substance that is composed of a single type of atom | Element |
| a substance made up of two or more different types of atoms | Compound |
| True or False: Only solid forms of matter are made up of atoms | False. ALL matter is made up of atoms. |
| the smallest unit of an element that retains the properties of that element | Atom |
| the amount of space occupied by an object | Volume |
| anything that has mass and takes up space | Matter |
| A 100 mL graduated cylinder was filled with water to the 50 mL mark. A rock was then added to the cylinder. After the rock was added, the volume of the cylinder was 65 mL. What is the volume of the rock? | 15mL (65mL-50mL=15mL) |
| You calculate density by.... | Mass divided by volume (ratio of mass: volume) |
| Something will float on a substance when its ratio is | Lower than the other substance. (Oil floats on water because its mass:volume answer is less than water's 1g:1mL) |
| three PHASES of matter | Solid, liquid, gas |
| phase of matter with a fixed volume and fixed shape | Solid |
| phase of matter with a fixed volume but no fixed shape | Liquid |
| phase of matter with no fixed volume or no fixed shape | Gas |
| Molecules in a solid | vibrate in place and are tightly packed |
| Molecules in a liquid | Slide past each other and are close together but not organized |
| Molecules in a gas | Zoom around and are very far apart |
| Evaporation | Liquid to gas |
| Condensation | Gas to liquid |
| Melting | Solid to liquid |
| Freezing | Liquid to solid |
| Sublimation | Solid to Gas |
| Endothermic | Heat going into |
| Exothermic | Heat going out |
| Heat | Energy causes molecules to vibrate or move |
| Temperature | Movement of the Molecules |
| Difference between temperature and heat | Temperature can stop going up but heat never stops going up or down |
| Density is... | The ratio of mass to volume (mass:volume). The number of atoms in a space. |
| If salt water’s density (mass:volume ratio) is 1.19 g/mL, what will happen if an object with a density (mass:volume ratio) of .85 g/mL is dropped into a container with salt water? | It will float because the mass to volume ratio is less than the salt water's mass:volume ratio. |
Created by:
meginnij
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