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Chemistry Exam 1
| Question | Answer |
|---|---|
| Particles that constitute the fundemental building blocks of matter. | Atoms |
| Two or more joined atoms arranged specifically. | Molecule |
| The science that seeks to understand the behavior of matter by studying atoms and molecules. | Chemistry |
| Have a fixed volume and shape | solid |
| A fixed volume that takes the shape of the container | liquid |
| Expands to occupy volume, compressable. | Gas |
| The kinds or amounts of substances that make up matter. | Composition |
| Composed of 1 single type of atom or molecule | Pure Substance |
| Substances that cannot be further broken down. | Element |
| Substances that are composed of two or more elements. | Compound |
| More than 1 atom or molecule type. | Mixture |
| Mixtture where the composition varies from region to region. | Heterogeneous Mixture |
| Mixture with the same component throughout | Homogeneous |
| Alters the state or appearence | Physical Change |
| The original sunstance transforms into something else. | Chemical change |
| Property of a material that is displayed without changing the composition. | Physical Property |
| Property that is displayed only by undergoing a phyical change. | Chemical Property |
| How close a series of measurments are to each other. | Precision |
| How close to the TRUE value measurments are. | Accuracy |
| Has an equal probability of being to high and to low, if enough measurments are taken it will eventually even out. | Random Error |
| Will consistently measure to high or to low. | Systematic Error |
| How much matter makes up an object. | mass |
| A tool used to convert one type of unit to another. | Dimensinal Analysis |
| Fractional quantity with the units we are converting from what we are converting to. | Conversion Factor |
| A characteristic that is dependent of the amount of the substance | Intensive Property |
| Dependant on the amount | Extensive property |
| In a chemical reaction, mass is neither created nor destroyed. -Antwoine Lauoisier | Law of Conservation of Mass |
| Things will come together in whole number ratios. | Law of Multiple Proportions. |
| Negatively charged, low mass particle. | Electron |
| The number of protons in an element. | Atomic Number (Z) |
| Unique 1 or 2 letter designated for each element. | Chemical Symbol |
| Atoms with the same number of protons, but different number of electrons | isotopes |
| The sum of the number of protons and neutrons an element has. | Mass number (A) |
| Positively charged ion. | Cation |
| Negatively Charged ion. | Anion |
| When elements are arranged in order of mass, certain sets of properties recur. | Periodic Law |
| Found in the lower and middle side of the periodic chart. Good conductors, shiney, ductile, malleable, lose electrons. | Metals |
| Found on the upper right portion of the periodic chart. Poor conductors, gain electrons in chemical changes. | Non-metals |
| Found between the metals and non-metals on the periodic chart. Semi-conductors. | Metalloids |
| Alkali, lose 1 electron | Group 1A |
| Alkaline earth metal, lose 2 electrons | Group 2A |
| Starts with oxygen, Gain 2 electrons | Group 6A |
| Halogens, Gain 1 electron | Group 7A |
| Variable, conform with multiple chargs | Transition Metals |
| E(fractional % of isotope)(mass of isotope) | Atomic Mass Formula |
| Amount of material the contains avagadro's number of particles. | The Mole |
| Avagadro's Number | 6.0221 * 10^23 |
Created by:
katdwatt
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