Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chem Chapter 3
| Term | Definition |
|---|---|
| Matter | is defined as anything that occupies space and has mass. |
| Atoms | Matter is ultimately composed of _____, submicroscopic particles that are the fundamental building blocks of matter |
| Molecules | In many cases, these atoms are bonded together to form ________, two or more atoms joined to one another in specific geometric arrangements. |
| Solid, Liquid, Gas | The common states of matter are ______, ______, and ___. |
| Crystalline Solid | Atoms or molecules are arranged in geometric patterns with long-range, repeating order. |
| Amorphous Solid | Atoms or molecules do not have long-range order. |
| Pure Substance | A ____ _______ is composed of only one type of atom or molecule. |
| Mixture | is composed of two or more different types of atoms or molecules combined in variable proportions. |
| Element | A pure substance that cannot be broken down into simpler substances |
| Compound | A pure substance composed of two or more elements in fixed definite proportions |
| Homogeneous Mixture | a mixture in which the composition is uniform throughout the mixture |
| Heterogeneous Mixture | a mixture in which the composition is not uniform throughout the mixture. |
| Physical | A ______ property is one that a substance displays without changing its composition. |
| Chemical | A ______ property is one that a substance displays only through changing its composition. |
| Reactants | In a chemical reaction, the substances present before the chemical change are called ________. |
| Products | The substances present after the change are called ______. |
| Chemical Reaction | Matter is neither created nor destroyed in a _____ ______. |
| Energy | ______ is the capacity to do work |
| Work | is defined as the result of a force acting on a distance. |
| Law of Conservation of Energy | states that energy is neither created nor destroyed |
| Kinetic Energy | the energy associated with its motion |
| Potential Energy | the energy associated with its position or composition |
| Electrical Energy | The energy associated with the flow of electrical charge |
| Thermal Energy | The energy associated with the random motions of atoms and molecules in matter |
| Chemical Energy | A form of potential energy associated with the positions of the particles that compose a chemical system |
| joule (J) | The SI unit of energy is the_____, named after the English scientist James Joule (1818–1889), who demonstrated that energy could be converted from one type to another as long as the total energy was conserved. |
| calorie (cal) | the amount of energy required to raise the temperature of 1 g of water by 1 °C. A calorie is a larger unit than a joule. |
| Calorie (Cal) | A related energy unit is the nutritional or______, equivalent to 1000 little c calories. |
| kilowatt-hour (kWh) | is 1 kJ per second times 3600 seconds in an hour. |
| Exothermic | In an ________ reaction, energy is released. |
| Endothermic | In an _______ reaction, energy is absorbed. |
| Temperature | The ________ of a substance is a measure of its thermal energy. |
| Heat | is the transfer or exchange of thermal energy caused by a temperature difference |
| Heat Capacity | The quantity of heat (usually in joules) required to change the temperature of a given amount of the substance by 1 °C (also in kelvins) |
| Specific Heat Capacity | When the amount of the substance is expressed in grams, the heat capacity is called the ______ ____ ________ and has units of joules per gram per degree Celsius, J/g °C (also in kelvins). |
Created by:
Sydboyer15
Popular Chemistry sets