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Hnrs Chem Chp 1&2
Honors Chemistry Chapter 1 and 2 Test
| Question | Answer |
|---|---|
| Mass | The measure of the amount of matter in an object. |
| Matter | Anything that has mass and take up space. |
| Atom | The smallest piece of matter that has physical and chemical properties. |
| Element | A pure substance that is made of only one type of atom. |
| Extensive Property | Depends on the amount of matter present |
| Intensive Property | Doesn't depend on the amount of matter present |
| Physical Change | A change in substance that does not involve a change in the identity of the substance |
| Physical Property | A characteristic that can be observed without changing the chemical identity. |
| Endothermic | Energy being absorbed. |
| Solid | Definite Shape and Definite Volume |
| Plasma | High temperature physical state of matter in which atoms lose most of their electrons. |
| Chemical Property | A substance ability to undergo changes that transform it into different substances. |
| Chemical Change | A change in which one or more substances is converted into a different substance. |
| Group | Vertical columns and similar reactivity. |
| Period | Horizontal rows that do not have similar properties. |
| Metal | Malleable, Ductile, Luster,Good Electric Conductors, & Good Heat Conductors |
| Nonmetal | Most are gases at room temperature, solids are brittle, and poor conductor of heat and electricity. |
| Metalloid | Between metals and nonmetals, have characteristics of metal and nonmetals, and solids at room temperature. |
| Liquid | Definite Volume but an indefinite shape. |
| Gas | No definite volume or shape. |
| Compound | A substance made from two or more elements that are chemically bounded. |
| Ectothermic | Energy being released. |
| Mixture | A blend of two or more kinds of matter. |
| Homogenous Mixture | Mixtures that are uniform in composition. Solutions. |
| Heterogenous Mixture | Mixtures that are not uniform in composition. |
| Pure Substance | Has a fixed composition and exactly the same properties. |
| Noble Gases | Unreactive Elements and Gases at room temperature. |
| What is the Scientific Method? | 1. Observing and Collecting Data 2. Formulating Hypothesis 3. Testing Hypothesis 4. Formulating Theories |
| Comparing Mass and Weight | Mass is the measure of the amount of matter in an object. Weight is the gravitational pull. |
| Density | Mass X Volume |
| kg/m3 or g/cm3 = ? | g/mL |
| Conversion factors always equal what | 1 |
| In conversions the numerator is always equal to what? | The denominator. |
| Accuracy is what? | Hitting your target. |
| Precision | How close the trials are to each other. |
| l o (observed) - a (accepted) l | Absolute Error |
| Ea (Absolute Error) / A (accept) x 100 =? | Percent Error or Relative Error |
| Sig Figs are ?? | Significant Figures |
| Non zero intergers | Always count |
| Leading Zeros | Never Count |
| Captive Zeros | Always count |
| Trailing Zeros | Only count with a decimal point |
| Exact Numbers (Determined by Counting i.e. 5 Dogs) | Are infinite |
| When multiplying and dividing sig figs | Fewest sig figs |
| M x 10 ^ n | Scientific Notation |
| Direct Porportions | Two quantities are directly proportional to each other. |
| Inverse Porportions | Two quantities are inversely proportional to each other if their product is constant. |
Created by:
MyKeilah
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