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Chemistry Test 1
| word/question | Answer |
|---|---|
| Accuracy | refers to the closeness of measurements to the correct or accepted value |
| Precision | refers to the closeness of a set of measurements of the same quantity made in the same way |
| What is not a chemical? | light, sound, energy |
| Organic | Study of most carbon (C) containing compounds |
| Inorganic | Study of compounds that are not organic |
| Physical | Study of the properties and changes of matter and their relation to energy |
| Analytical | The identification of the compounds and composition of materials |
| Biochemistry | Study of the substances and processes occurring in living things |
| Theoretical | The use of math and computes to understand the principles behind observed chemical behavior and to design and predict the properties of new compounds |
| inference | conclusion based on facts rather then direct observation |
| What is a theory? | A broad generalization that explains a body of facts of phenomena |
| What is chemistry? | the study of matter and its ability to change |
| What is a chemical? | is any substance that has a definite composition |
| Matter | anything that has mass and takes up space |
| Mass | a measure of the amount of matter |
| Volume | the amount if three dimensional space an object occupies |
| Atom | the smallest unit of an element that maintains the properties of that element |
| Element | a pure substance made of only one kind of atom |
| Compound | a substance that is made from the atoms of two or more elements that are chemically bonded |
| Physical property | a characteristic that can be observed or measured with out changing the identity of the substance |
| Physical Change | a change in a substance that does not involve a change in the identity of the substance |
| change of state | is a physical change of a substance from one state to another |
| What are three common states of matter? | solid, liquid, and gas |
| chemical property | relates to a substance’s ability to undergo changes that transform it into different substances |
| reactants | • The substances that reacts in a chemical change |
| products | • The substances that are formed by the chemical |
| mixture | a blend of two or more kinds of matter, each of which retains its own identity and properties |
| Homogenous mixtures | are uniform in composition. They have the same proportion of components throughout |
| Heterogeneous mixtures | are not uniform throughout |
| Independent variable | the one factor that you change during an experiment |
| Dependant variable | the factor that you observe |
Created by:
mmichell08
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